version that you are working on. See TRANSLATION for details.
@end ignore
-@c \version "2.11.38"
+@c \version "2.11.51"
+
+@ignore
+GDP TODO list
+
+1.2.3.1 Time signature
+Needs an example of beatLength, which is broken (see my recent
+mail
+to -bug). What to do? For now I've left a paragraph of text
+which really
+needs to be inserted with an example in a snippet.
+
+1.2.3.4 Polymetric notation
+Quite extensive changes. Could you please check through. Divided
+into three
+sections. Necessarily uses tweaks. I've also left an @lsr under
+@seealso
+Snippets - is this permitted or is @lsr now verboten? This
+snippet is too
+long to include, but seems relevant.
+A snippet "grouping beats" hasn't yet appeared (only sent to vv a
+couple of
+days ago). Text left in Snippets: with TODO.
+@end ignore
@node Rhythms
@section Rhythms
This section discusses rhythms, rests, durations, beaming and bars.
@menu
-* Writing rhythms::
-* Writing rests::
-* Displaying rhythms::
-* Beams::
-* Bars::
-* Special rhythmic concerns::
+* Writing rhythms::
+* Writing rests::
+* Displaying rhythms::
+* Beams::
+* Bars::
+* Special rhythmic concerns::
@end menu
@subsection Writing rhythms
@menu
-* Durations::
-* Tuplets::
-* Scaling durations::
-* Ties::
+* Durations::
+* Tuplets::
+* Scaling durations::
+* Ties::
@end menu
@node Durations
@funindex \dotsNeutral
Dots are normally moved up to avoid staff lines, except in
-polyphonic situations. Predefined commands are available to
+polyphonic situations. Predefined commands are available to
force a particular direction manually, for details
-see @ref{Controlling direction and placement}.
+see @ref{Direction and placement}.
@predefined
@ref{Proportional notation}.
Snippets:
-@lsrdir{Rhythms,Rhythms}
+@rlsr{Rhythms}.
Internals Reference:
-@internalsref{Dots},
-@internalsref{DotColumn}.
+@rinternals{Dots},
+@rinternals{DotColumn}.
@knownissues
@lilypond[quote,ragged-right,fragment,verbatim,relative=2]
a2 \times 2/3 { b4 b b }
c4 c \times 2/3 { b4 a g }
-
@end lilypond
@funindex \tupletUp
The automatic placement of the tuplet bracket above or below the
notes may be overridden manually with predefined commands, for
-details see @ref{Controlling direction and placement}.
+details see @ref{Direction and placement}.
Tuplets may be nested:
@funindex tupletNumberFormatFunction
@funindex tupletSpannerDuration
-@lilypondfile[verbatim,lilyquote,ragged-right,texidoc]
+@lilypondfile[verbatim,lilyquote,ragged-right,texidoc,doctitle]
{entering-several-tuplets-using-only-one--times-command.ly}
@funindex TupletNumber
-@lilypondfile[verbatim,lilyquote,ragged-right,texidoc]
+@lilypondfile[verbatim,lilyquote,ragged-right,texidoc,doctitle]
{changing-the-tuplet-number.ly}
-@lilypondfile[verbatim,lilyquote,ragged-right,texidoc]
+@lilypondfile[verbatim,lilyquote,ragged-right,texidoc,doctitle]
{permitting-line-breaks-within-beamed-tuplets.ly}
@seealso
Notation Reference:
@ref{Time administration},
@ref{Scaling durations},
-@ref{Objects connected to the input},
+@ref{The tweak command},
@ref{Polymetric notation}.
Snippets:
-@lsrdir{Rhythms,Rhythms}
+@rlsr{Rhythms}.
Internals Reference:
-@internalsref{TupletBracket},
-@internalsref{TupletNumber},
-@internalsref{TimeScaledMusic}.
+@rinternals{TupletBracket},
+@rinternals{TupletNumber},
+@rinternals{TimeScaledMusic}.
@knownissues
@cindex grace notes within tuplet brackets
-When the very first note on a staff is a grace note followed by a
+When the first note on a staff is a grace note followed by a
tuplet the grace note must be placed before the @code{\times}
command to avoid errors. Anywhere else, grace notes may be
placed within tuplet brackets.
@cindex scaling durations
@cindex durations, scaling
-TODO Change \compressMusic to \scaleDurations when implemented.
-
You can alter the duration of single notes, rests or chords by a
fraction @code{N/M} by appending @code{*N/M} (or @code{*N} if
@code{M} is 1) to the duration.
@code{s1*23}.
@cindex compressing music
-@funindex \compressMusic
+@funindex \scaleDurations
-Longer stretches of music may be compressed by a fraction in
-the same way, as if every note, chord or rest had the fraction
-as a multiplier. The general syntax of the command to do this
-is:
-
-@example
-\compressMusic #'(@emph{num} . @emph{den}) @{ @emph{music} @}
-@end example
-
-@noindent
-This will leave the appearance of @emph{music} unchanged but
+Longer stretches of music may be compressed by a fraction in the
+same way, as if every note, chord or rest had the fraction as a
+multiplier. This leaves the appearance of the music unchanged but
the internal duration of the notes will be multiplied by the
-fraction @emph{num}/@emph{den}. The spaces around the dot
-are required. Here is an example showing how music can be
-compressed and expanded:
+fraction @emph{num}/@emph{den}. The spaces around the dot are
+required. Here is an example showing how music can be compressed
+and expanded:
@lilypond[quote,fragment,relative=2,ragged-right,verbatim]
\time 2/4
% Normal durations
<c a>4 c8 a
% Scale music by *2/3
-\compressMusic #'(2 . 3) {
+\scaleDurations #'(2 . 3) {
<c a f>4. c8 a f
}
% Scale music by *2
-\compressMusic #'(2 . 1) {
+\scaleDurations #'(2 . 1) {
<c' a>4 c8 b
}
@end lilypond
Notation Reference:
@ref{Tuplets},
-@ref{Skips},
+@ref{Invisible rests},
@ref{Polymetric notation}.
Snippets:
-@lsrdir{Rhythms,Rhythms}
+@rlsr{Rhythms}.
@node Ties
A tie is entered using the tilde symbol @code{~}
@lilypond[quote,ragged-right,fragment,verbatim]
-e' ~ e'
+e'2 ~ e'
@end lilypond
be entered as follows:
@lilypond[fragment,quote,ragged-right,verbatim,relative=1]
-<c f g>\laissezVibrer
+<c f g>1\laissezVibrer
@end lilypond
@cindex ties, placement
The vertical placement of ties may be controlled, see
Predefined commands, or for details, see
-@ref{Controlling direction and placement}.
+@ref{Direction and placement}.
@cindex ties, appearance
@funindex \tieDotted
@snippets
-@lilypondfile[verbatim,lilyquote,ragged-right,texidoc]
+@lilypondfile[verbatim,lilyquote,ragged-right,texidoc,doctitle]
{using-ties-with-arpeggios.ly}
-@lilypondfile[verbatim,lilyquote,ragged-right,texidoc]
+@lilypondfile[verbatim,lilyquote,ragged-right,texidoc,doctitle]
{engraving-ties-manually.ly}
Notation Reference: @ref{Automatic note splitting}.
Snippets:
-@lsrdir{Rhythms,Rhythms}
+@rlsr{Rhythms}.
Internals Reference:
-@internalsref{LaissezVibrerTie},
-@internalsref{LaissezVibrerTieColumn},
-@internalsref{TieColumn},
-@internalsref{Tie}.
+@rinternals{LaissezVibrerTie},
+@rinternals{LaissezVibrerTieColumn},
+@rinternals{TieColumn},
+@rinternals{Tie}.
@knownissues
@node Writing rests
@subsection Writing rests
+Rests are entered as part of the music in music expressions.
+
@menu
-* Rests::
-* Skips::
-* Full measure rests::
+* Rests::
+* Invisible rests::
+* Full measure rests::
@end menu
@node Rests
@subsubsection Rests
@cindex rest
+@cindex rest, entering durations
@cindex maxima
@cindex longa
@cindex breve
@funindex \longa
@funindex \breve
-Rests are entered like notes with the note name @code{r};
-longer rests with the predefined commands shown:
+Rests are entered like notes with the note name @code{r}.
+Durations longer than a whole rest use the predefined
+commands shown:
@c \time 16/1 is used to avoid spurious bar lines
@c and long tracts of empty measures
r\longa
% Print a breve rest
r\breve
- r1 r2 r4 r8 r16 r32 r64
+ r1 r2 r4 r8 r16 r32 r64 r128
}
@end lilypond
-Whole measure rests, centered in the middle of the measure, must
-be entered as multi-measure rests. They can be used for a single
-measure as well as many measures and are discussed in
-@ref{Full measure rests}.
+@cindex rest, multi-measure
+@cindex rest, whole-measure
+
+Whole measure rests, centered in the middle of the measure, must be
+entered as multi-measure rests. They can be used for a single
+measure as well as many measures and are discussed in @ref{Full
+measure rests}.
+
+@cindex rest, specifying vertical position
To explicitly specify a rest's vertical position, write a note
-followed by @code{\rest}. A rest will be placed in the position
-where the note would appear. This allows for precise manual
-formatting of polyphonic music, since the automatic rest collision
-formatter will leave these rests alone.
+followed by @code{\rest}. A rest of the duration of the note will
+be placed at the staff position where the note would appear. This
+allows for precise manual formatting of polyphonic music, since the
+automatic rest collision formatter will not move these rests.
@lilypond[fragment,quote,ragged-right,verbatim,relative=2]
a4\rest d4\rest
@snippets
-@lilypondfile[verbatim,lilyquote,ragged-right,texidoc]
+@lilypondfile[verbatim,lilyquote,ragged-right,texidoc,doctitle]
{rest-styles.ly}
@seealso
-Notation Reference: @ref{Full measure rests}
+Notation Reference:
+@ref{Full measure rests}.
Snippets:
-@lsrdir{Rhythms,Rhythms}
+@rlsr{Rhythms}.
-Internals Reference: @internalsref{Rest}
+Internals Reference:
+@rinternals{Rest}.
@knownissues
longest and shortest), but the number of glyphs is limited: there
are rests from 128th to maxima (8 x whole).
-@node Skips
-@subsubsection Skips
+
+@node Invisible rests
+@subsubsection Invisible rests
@cindex skip
@cindex invisible rest
@cindex rest, invisible
@cindex spacer note
-
-@funindex \skip
@funindex s
+@funindex \skip
-An invisible rest (also called a @q{skip rest}) can be entered like a
-note with note name @code{s} or with the predefined skip command
-followed by the required duration, as shown here:
+An invisible rest (also called a @q{spacer rest}) can be entered
+like a note with the note name@tie{}@code{s}:
-@lilypond[fragment,quote,ragged-right,verbatim,relative=2]
-% Skip the third beat in the first measure
-a4 a4 s4 a4
-% Use skip command to skip a whole note (measure)
-\skip 1
-a2 a2
+@lilypond[verbatim,quote,relative=2]
+c4 c s c
+s2 c
@end lilypond
@cindex lyrics, skip
-The @code{s} syntax is only available in note mode and chord mode.
-In other situations, for example, when entering lyrics, one must
-use the predefined skip command:
+Spacer rests are available only in note mode and chord mode. In
+other situations, for example, when entering lyrics, @code{\skip}
+is used to skip a musical moment. @code{\skip} requires an
+explicit duration.
@lilypond[quote,ragged-right,verbatim,relative=2]
<<
- { a2 a2 }
- \new Lyrics \lyricmode { \skip 2 bla2 }
+ {
+ a2 \skip2 a2 a2
+ }
+ \new Lyrics {
+ \lyricmode {
+ foo2 \skip 1 bla2
+ }
+ }
>>
@end lilypond
-The @code{s} skip rest implicitly causes @code{Staff} and
-@code{Voice} contexts to be created if none exist, just
-like notes and rests do. These in turn cause a staff with default
-clef and time signature to be printed, with bar lines if necessary.
-For example, the following results in a complete staff with three
-short empty measures:
+A spacer rest implicitly causes @code{Staff} and @code{Voice}
+contexts to be created if none exist, just like notes and rests
+do:
-@lilypond[quote,verbatim,fragment,ragged-right]
-{ s1 s s }
+@lilypond[quote,verbatim,fragment]
+s1 s s
@end lilypond
-However, the predefined skip command behaves differently: it is
-merely an empty musical placeholder. It does not create any
-contexts and does not cause anything to be printed, not even
-transparently. On its own it does not even print an
-empty page:
+@code{\skip} simply skips musical time; it creates no output of
+any kind.
-@example
+@lilypond[quote,verbatim,fragment]
% This is valid input, but does nothing
-@{ \skip 1 @}
-@end example
+\skip 1 \skip1 \skip 1
+@end lilypond
@seealso
Snippets:
-@lsrdir{Rhythms,Rhythms}
+@rlsr{Rhythms}.
-Internals Reference: @internalsref{SkipMusic}
+Internals Reference: @rinternals{SkipMusic}
@node Full measure rests
the note name uppercase @code{R}:
@lilypond[quote,fragment,verbatim,relative=2]
-% Rest bars contracted to single bar
+% Rest measures contracted to single measure
\compressFullBarRests
R1*4
R1*24
b2^"Tutti" b4 a4
@end lilypond
+The duration of full-measure rests is identical to the duration notation
+used for notes. The duration in a multi-measure rest must always be an
+integral number of measure-lengths, so augmentation
+dots or fractions must often be used:
+
+@lilypond[quote,ragged-right,fragment,verbatim]
+\compressFullBarRests
+\time 2/4
+R1 | R2 |
+\time 3/4
+R2. | R2.*2 |
+\time 13/8
+R1*13/8 | R1*13/8*12 |
+\time 10/8
+R4*5*4 |
+@end lilypond
+
+A full-measure rest is printed as either a whole
+or breve rest, centered in the measure, depending on the time
+signature.
+
+@lilypond[quote,ragged-right,fragment,verbatim]
+\time 4/4
+R1 |
+\time 6/4
+R1*3/2 |
+\time 8/4
+R1*2 |
+@end lilypond
@funindex \expandFullBarRests
@funindex \compressFullBarRests
@cindex multi-measure rest, expanding
@cindex multi-measure rest, contracting
By default a multi-measure rest is expanded in the printed score
-to show all the rest measures explicitly or (as in the example
-above) it can be contracted to a single measure containing a
-multi-measure rest symbol, with the number of measures of rest
+to show all the rest measures explicitly.
+Alternatively, a mult-measure rest can be shown as a single measure
+containing a multi-measure rest symbol, with the number of measures of rest
printed above the measure:
@lilypond[quote,ragged-right,fragment,verbatim]
R2.*2 |
@end lilypond
-The @code{1} in @code{R1} is similar to the duration notation
-used for notes and is the length of a measure in 2/2 or 4/4 time.
-The duration in a multi-measure rest must always be an integral
-number of measure-lengths, so in other time signatures augmentation
-dots or fractions must be used:
-
-@lilypond[quote,ragged-right,fragment,verbatim]
-\compressFullBarRests
-\time 3/4
-R2. | R2.*2
-\time 13/8
-R1*13/8 | R1*13/8*12 |
-\time 10/8
-R4*5*4 |
-@end lilypond
-
-An @code{R} spanning a single measure is printed as either a whole
-or breve rest, centered in the measure, regardless of the time
-signature.
-
@cindex text on multi-measure rest
@cindex multi-measure rest, attaching text
@cindex fermata on multi-measure rest
@cindex multi-measure rest, attaching fermata
-Text can be added to multi-measure rests by using the
-@var{note} - @code{\markup} syntax described in
-@ref{Formatting text}. The predefined command @code{\fermataMarkup}
+Markups can be added to multi-measure rests.
+The predefined command @code{\fermataMarkup}
is provided for adding fermatas.
@lilypond[quote,ragged-right,verbatim,fragment]
R2.^\fermataMarkup
@end lilypond
-@warning{Text attached to a multi-measure rest is created
-by @code{MultiMeasureRestText}, not
+@warning{
+Markups attached to a multi-measure rest are
+objects of type @code{MultiMeasureRestText}, not
@code{TextScript}. Overrides must be directed to the correct
-object, or they will be ignored. See the following example.}
+object, or they will be ignored. See the following example.
+}
@lilypond[quote,ragged-right,verbatim,fragment]
% This fails, as the wrong object name is specified
R1^"right"
@end lilypond
-Text attached to a multi-measure rest will be centered above or
-below it. Long text attached in this way does not cause the
-measure to expand, and may collide with text in adjacent measures.
-This behavior may be changed with the predefined command
-@code{\textLengthOn}, which will cause following bars to expand
-as necessary to accommodate text. @code{\textLengthOff} returns
-to the default behavior. To left-align text within a bar attach
-it to a zero-length skip note preceding the rest.
-
-@lilypond[quote,ragged-right,verbatim,fragment,relative=2]
-\compressFullBarRests
-\textLengthOn
-s1*0^\markup { [MAJOR GENERAL] }
-R1*19
-s1*0^\markup { [MABEL] }
-s1*0_\markup { \italic { Cue: ... it is yours } }
-R1*30
-\textLengthOff
-c4^\markup { CHORUS } d f c
-@end lilypond
-
-@noindent
-Text attached to a skip note in this way is left-aligned to the
-position where the note would be placed in the measure, and placed
-above the measure count numeral, but if the measure length is
-determined by the length of the text, the text will appear to be
-centered. If two (or more) texts are
-attached to skip notes in a measure the measure length is determined by
-the longer text, and the shorter text is then clearly
-left-aligned, as shown in the second measure above. If the shorter
-text of two marks is short enough to fit it will be placed
-alongside and to the left of the measure count numeral.
+When a multi-measure rest immediately follows a @code{\partial}
+setting, resulting bar-check warnings may not be displayed.
@predefined
@code{\textLengthOn},
@cindex rest, church
@cindex kirchenpausen
-@lilypondfile[verbatim,lilyquote,ragged-right,texidoc]
+@lilypondfile[verbatim,lilyquote,ragged-right,texidoc,doctitle]
{changing-form-of-multi--measure-rests.ly}
@cindex multi-measure rests, positioning
@cindex positioning multi-measure rests
-@lilypondfile[verbatim,lilyquote,ragged-right,texidoc]
+@lilypondfile[verbatim,lilyquote,ragged-right,texidoc,doctitle]
{positioning-multi--measure-rests.ly}
+@c TODO -- convert to snippet -- submitted to Neil
+Markups attached to a multi-measure rest will be centered above or
+below it. Long markups attached to multi-measure rests do not cause
+the measure to expand. To expand a multi-measure rest to fit the markup,
+use a spacer rest with an attached markup before the multi-measure rest:
+
+@lilypond[quote,ragged-right,verbatim,fragment,relative=2]
+\compressFullBarRests
+\textLengthOn
+s1*0^\markup { [MAJOR GENERAL] }
+R1*19
+s1*0_\markup { \italic { Cue: ... it is yours } }
+s1*0^\markup { A }
+R1*30^\markup { [MABEL] }
+\textLengthOff
+c4^\markup { CHORUS } d f c
+@end lilypond
+
+@noindent
+Note that the spacer rest causes a bar to be inserted.
+Text attached to a spacer rest in this way is left-aligned to the
+position where the note would be placed in the measure, but if the
+measure length is determined by the length of the text, the text will
+appear to be centered.
+
@seealso
Music Glossary:
-@rglos{multi-measure rest},
-@rglos{church rests}.
+@rglos{multi-measure rest}.
Notation Reference:
@ref{Durations},
@ref{Text scripts}.
Snippets:
-@lsrdir{Rhythms,Rhythms}
+@rlsr{Rhythms}.
Internals Reference:
-@internalsref{MultiMeasureRest},
-@internalsref{MultiMeasureRestNumber},
-@internalsref{MultiMeasureRestText}.
+@rinternals{MultiMeasureRest},
+@rinternals{MultiMeasureRestNumber},
+@rinternals{MultiMeasureRestText}.
@knownissues
numeral (10).
@cindex condensing rests
-@cindex rests, condensing ordinary
+@cindex rest, condensing ordinary
There is no way to automatically condense multiple ordinary rests
into a single multi-measure rest.
-@cindex rests, collisions of
+@cindex rest, collisions of
Multi-measure rests do not take part in rest collisions.
-Be careful when entering multi-measure rests followed by whole
-notes. The following will enter two notes lasting four measures
-each:
-
-@example
-R1*4 cis cis
-@end example
-
-
@node Displaying rhythms
@subsection Displaying rhythms
@menu
-* Time signature::
-* Upbeats::
-* Unmetered music::
-* Polymetric notation::
-* Automatic note splitting::
-* Showing melody rhythms::
+* Time signature::
+* Upbeats::
+* Unmetered music::
+* Polymetric notation::
+* Automatic note splitting::
+* Showing melody rhythms::
@end menu
@node Time signature
@cindex Time signature, visibility of
-Time signatures by default are printed at the start of every line
+Time signatures are printed at the beginning of a piece
and whenever the time signature changes. If a change takes place
-at the end of a line a warning time signature sign is printed
-there. This default behavior may be changed, see
+at the end of a line a warning time signature sign is printed
+there. This default behavior may be changed, see
@ref{Controlling visibility of objects}.
+@lilypond[quote,ragged-right,fragment,verbatim,relative=2]
+\time 2/4
+c2 c
+\break
+c c
+\break
+\time 4/4
+c c c c
+@end lilypond
+
@funindex \numericTimeSignature
@funindex \defaultTimeSignature
@cindex time signature style
-The symbol that is printed in 2/2 and 4/4 time can be customized
-to use a numeric style:
+The time signature symbol that is used in 2/2 and 4/4 time can be
+changed to a numeric style:
@lilypond[fragment,quote,ragged-right,verbatim,relative=2]
% Default style
Scheme function @code{set-time-signature}, which takes three
arguments: the number of beats, the beat length, and the internal
grouping of beats in the measure. If the
-@internalsref{Measure_grouping_engraver} is included, the function
-will also create @internalsref{MeasureGrouping} signs. Such signs
+@rinternals{Measure_grouping_engraver} is included, the function
+will also create @rinternals{MeasureGrouping} signs. Such signs
ease reading rhythmically complex modern music. In the example,
the 9/8 measure is subdivided in 2, 2, 2 and 3. This is passed to
@code{set-time-signature} as the third argument: @code{'(2 2 2 3)}:
@cindex compound time signatures
@cindex time signature, compound
-@lilypondfile[verbatim,lilyquote,ragged-right,texidoc]
+@lilypondfile[verbatim,lilyquote,ragged-right,texidoc,doctitle]
{compound-time-signatures.ly}
@rglos{time signature}
Notation Reference:
-@ruser{Ancient time signatures},
-@ruser{Time administration}.
+@ref{Ancient time signatures},
+@ref{Time administration}.
Snippets:
-@lsrdir{Rhythms,Rhythms}
+@rlsr{Rhythms}.
Internals Reference:
-@internalsref{TimeSignature},
-@internalsref{Timing_translator}.
+@rinternals{TimeSignature},
+@rinternals{Timing_translator}.
@knownissues
entered using the @code{\partial} command, with the syntax
@example
-\partial @var{duration} @emph{notes}
+\partial @var{duration}
@end example
-where @code{duration} is the rhythmic length of the @emph{notes}
-which are to be placed before the first complete measure:
+where @code{duration} is the rhythmic length of the interval
+before the start of the first complete measure:
+
+@lilypond[quote,ragged-right,fragment,verbatim,relative=2]
+\partial 4 e4 |
+a2. c,4 |
+@end lilypond
+
+The partial measure can be any duration less than a full measure:
@lilypond[quote,ragged-right,fragment,verbatim,relative=2]
-\partial 16*5 c16 cis d dis e |
+\partial 8*3 c8 d e |
a2. c,4 |
-b2
@end lilypond
Internally, this is translated into
command: i.e., @code{\partial 4} is internally translated to
@code{-4}, meaning @qq{there is a quarter note left in the measure.}
-
@seealso
Music Glossary: @rglos{anacrusis}
Notation Reference: @ref{Grace notes}
Snippets:
-@lsrdir{Rhythms,Rhythms}
+@rlsr{Rhythms}.
-Internal Reference: @internalsref{Timing_translator}
+Internal Reference:
+@rinternals{Timing_translator}
@knownissues
@cindex grace notes, in anacruses
-This command does not take into account grace notes at the start
-of the music. If the pick-up starts with one or more grace
-notes, then the @code{\partial} should follow the grace note(s):
-
-@lilypond[verbatim,quote,ragged-right,relative,fragment]
-\grace f16
-\partial 4
-g4
-a2 g2
-@end lilypond
-
The @code{\partial} command is intended to be used only at the
beginning of a piece. If you use it after the beginning, some
odd warnings may occur.
@cindex unmetered music
Bar lines and bar numbers are calculated automatically. For
-unmetered music (cadenzas, for example), this is not desirable.
-To turn off automatic bar lines and bar numbers, use the command
-@code{\cadenzaOn}, and use @code{\cadenzaOff} to turn them on
-again.
+unmetered music (some cadenzas, for example), this is not desirable.
+To turn off automatic calculation of bar lines and bar numbers,
+use the command @code{\cadenzaOn}, and use @code{\cadenzaOff}
+to turn them on again.
@lilypond[verbatim,quote,ragged-right,relative=2,fragment]
c4 d e d
@seealso
-Music Glossary: @rglos{cadenza}
+Music Glossary:
+@rglos{cadenza}
-Notation Reference: @ref{Controlling visibility of objects}
+Notation Reference:
+@ref{Controlling visibility of objects}
Snippets:
-@lsrdir{Rhythms,Rhythms}
+@rlsr{Rhythms}.
@knownissues
@cindex polymetric signatures
@cindex meter, polymetric
-@strong{Alternating time signatures}
-
-Regularly alternating double time signatures are not supported
-explicitly, but they can be faked. In the next example, the
-double time signature is created with markup text, while the
-real time signature is set in the usual way with @code{\time}.
-
-@lilypond[verbatim,ragged-right]
-% Create 9/8 split into 2/4 + 5/8
-tsMarkup = \markup {
- \override #'(baseline-skip . 2) \number {
- \column { "2" "4" }
- \vcenter "+"
- \bracket \column { "5" "8" }
- }
-}
-
-{
- \override Staff.TimeSignature #'stencil =
- #ly:text-interface::print
- \override Staff.TimeSignature #'text = #tsMarkup
- \time 9/8
- c'2 \bar ":" c'4 c'4.
- c'2 \bar ":" c'4 c'4.
-}
-@end lilypond
+Polymetric notation is supported, either explicitly or through
+clever use of markup features.
@strong{Staves with different time signatures, equal measure lengths}
for each staff but replacing the symbol manually by setting
@code{timeSignatureFraction} to the desired fraction and scaling
the printed durations in each staff to the common time
-signature. This done with @code{\compressMusic}, which
+signature. This is done with @code{\scaleDurations}, which
is used in a similar way to @code{\times}, but does not create
a tuplet bracket, see @ref{Scaling durations}.
\new Staff {
\time 3/4
\set Staff.timeSignatureFraction = #'(9 . 8)
- \compressMusic #'(2 . 3)
+ \scaleDurations #'(2 . 3)
\repeat unfold 6 { c8[ c c] }
}
\new Staff {
\time 3/4
\set Staff.timeSignatureFraction = #'(10 . 8)
- \compressMusic #'(3 . 5) {
+ \scaleDurations #'(3 . 5) {
\repeat unfold 2 { c8[ c c] }
\repeat unfold 2 { c8[ c] } |
c4. c4. \times 2/3 { c8 c c } c4
>>
@end lilypond
+@snippets
+
+@c TODO -- Convert to snippet. -- Sent to Neil 8/14/08
+
+@strong{Alternating time signatures}
+
+Regularly alternating double time signatures are not supported
+explicitly, but they can be faked. In the next example, the
+double time signature is created with markup text, while the
+real time signature is set in the usual way with @code{\time}.
+
+@lilypond[verbatim,ragged-right]
+% Create 9/8 split into 2/4 + 5/8
+tsMarkup = \markup {
+ \override #'(baseline-skip . 2) \number {
+ \column { "2" "4" }
+ \vcenter "+"
+ \bracket \column { "5" "8" }
+ }
+}
+
+{
+ \override Staff.TimeSignature #'stencil =
+ #ly:text-interface::print
+ \override Staff.TimeSignature #'text = #tsMarkup
+ \time 9/8
+ c'2 \bar ":" c'4 c'4.
+ c'2 \bar ":" c'4 c'4.
+}
+@end lilypond
+
@seealso
Notation Reference: @ref{Scaling durations}
Snippets:
-@lsrdir{Rhythms,Rhythms}
+@rlsr{Rhythms}.
@c Is this still permitted?
@c @lsr{contemporary,compound-time-signature}
Internals Reference:
-@internalsref{TimeSignature},
-@internalsref{Timing-translator},
-@internalsref{Staff}.
+@rinternals{TimeSignature},
+@rinternals{Timing_translator},
+@rinternals{Staff}.
@knownissues
-When using different time signatures in parallel, the spacing is
-aligned vertically, but bar lines distort the regular spacing.
-
+When using different time signatures in parallel, notes
+at the same moment will be be placed at the same horizontal
+location. However, the bar lines in the different staves
+will cause the note spacing to be less regular in each of the
+individual staves than would be normal without the different
+time signatures.
@node Automatic note splitting
@subsubsection Automatic note splitting
Long notes which overrun bar lines can be converted automatically
to tied notes. This is done by replacing the
-@code{Note_heads_engraver} by the
+@code{Note_heads_engraver} with the
@code{Completion_heads_engraver}. In the following
example, notes crossing the bar lines are split and tied.
measures are not entirely filled, then the ties show exactly how
much each measure is off.
-To allow line breaking on the bar lines where the
-@code{Completion_heads_engraver} has inserted a split note, remove
-the @code{Forbid_line_break_engraver} too.
-
-
@seealso
Music Glossary: @rglos{tie}
@rlearning{Adding and removing engravers}.
Snippets:
-@lsrdir{Rhythms,Rhythms}
+@rlsr{Rhythms}.
Internals Reference:
-@internalsref{Note_heads_engraver},
-@internalsref{Completion_heads_engraver},
-@internalsref{Forbid_line_break_engraver}.
+@rinternals{Note_heads_engraver},
+@rinternals{Completion_heads_engraver},
+@rinternals{Forbid_line_break_engraver}.
@knownissues
Not all durations (especially those containing tuplets) can be
-represented exactly with normal notes and dots, but the engraver
-will not insert tuplets.
+represented exactly with normal notes and dots, but the
+@code{Completion_heads_engraver} will not insert tuplets.
The @code{Completion_heads_engraver} only affects notes; it does not
split rests.
can be done with the rhythmic staff. All pitches of notes on such a
staff are squashed, and the staff itself has a single line
-@c TODO Devise a more realistic example, perhaps with lyrics -td
@lilypond[quote,ragged-right,fragment,relative=1,verbatim]
-\new RhythmicStaff {
- \time 4/4
- c4 e8 f g2 | r4 g r2 | g1 | r1 |
-}
+<<
+ \new RhythmicStaff {
+ \new Voice = "myRhythm" {
+ \time 4/4
+ c4 e8 f g2
+ r4 g g f
+ g1
+ }
+ }
+ \new Lyrics {
+ \lyricsto "myRhythm" {
+ This is my song
+ I like to sing
+ }
+ }
+>>
@end lilypond
+Guitar chord charts often show the strumming rhythms. This can
+be done with the @code{Pitch_squash_engraver} and
+@code{\improvisationOn}.
+
+
+@lilypond[quote,verbatim]
+<<
+ \new ChordNames {
+ \chordmode {
+ c1 f g c
+ }
+ }
+
+ \new Voice \with {
+ \consists Pitch_squash_engraver
+ } \relative c'' {
+ \improvisationOn
+ c4 c8 c c4 c8 c
+ f4 f8 f f4 f8 f
+ g4 g8 g g4 g8 g
+ c4 c8 c c4 c8 c
+ }
+>>
+@end lilypond
+
+@predefined
+@code{\improvisationOn},
+@code{\improvisationOff}.
+
+@snippets
+@c TODO -- Convert to snippet;
+@c tag for both Rhythms and Guitar? Move to @seealso?
+
+For guitar music, it is possible to show strum rhythms, along
+with melody notes, chord names, and fret diagrams.
+
+
+@lilypond[quote,verbatim]
+\include "predefined-guitar-fretboards.ly"
+<<
+ \new ChordNames {
+ \chordmode {
+ c1 f g c
+ }
+ }
+
+ \new FretBoards {
+ \chordmode {
+ c1 f g c
+ }
+ }
+
+
+ \new Voice \with {
+ \consists Pitch_squash_engraver
+ } \relative c'' {
+ \improvisationOn
+ c4 c8 c c4 c8 c
+ f4 f8 f f4 f8 f
+ g4 g8 g g4 g8 g
+ c4 c8 c c4 c8 c
+ }
+
+
+ \new Voice = "melody" {
+ \relative c'' {
+ \improvisationOff
+ c2 e4 e4
+ f2. r4
+ g2. a4
+ e4 c2.
+ }
+ }
+
+ \new Lyrics {
+ \lyricsto "melody" {
+ This is my song.
+ I like to sing.
+ }
+ }
+>>
+@end lilypond
+
+@seealso
+
+Snippets:
+@rlsr{Rhythms}.
+
+Internals Reference:
+@rinternals{RhythmicStaff},
+@rinternals{Pitch_squash_engraver}.
@node Beams
@subsection Beams
@menu
-* Automatic beams::
-* Setting automatic beam behavior::
-* Manual beams::
-* Feathered beams::
+* Automatic beams::
+* Setting automatic beam behavior::
+* Manual beams::
+* Feathered beams::
@end menu
@node Automatic beams
c16 c8
@end lilypond
+@predefined
+@code{\autoBeamOff},
+@code{\autoBeamOn}.
@snippets
+@c TODO -- convert to snippet
Beaming patterns may be altered with the @code{beatGrouping} property,
@lilypond[quote,verbatim,relative=2,fragment,ragged-right]
c8[^"(3+2)" c16 c8]
@end lilypond
+@c TODO convert to snippet
The beams of consecutive 16th (or shorter) notes are, by default,
not sub-divided. That is, the three (or more) beams stretch
unbroken over entire groups of notes. This behavior can
-be modified to sub-divide the beams into sub-groups by setting
-the property @code{subdivideBeams}. When set, multiple beams
+be modified to sub-divide the beams into sub-groups by setting
+the property @code{subdivideBeams}. When set, multiple beams
will be sub-divided at intervals defined by the current value of
@code{beatLength} by reducing the multiple beams to just one beam
between the sub-groups. Note that @code{beatLength} lives in the
@cindex break, line
@cindex line breaks
+@c TODO convert to snippet
Line breaks are normally forbidden when beams cross bar lines.
-This behavior can be changed by setting the @code{breakable}
+This behavior can be changed by setting the @code{breakable}
property: @code{\override Beam #'breakable = ##t}.
@lilypond[ragged-right,relative=2,fragment,verbatim,quote]
@cindex kneed beams
@cindex auto-knee-gap
+@c TODO convert to snippet
Kneed beams are inserted automatically when a large gap is
detected between the note heads. This behavior can be tuned
through the @code{auto-knee-gap} property. A kneed beam is
-drawn if the gap is larger than the value of
+drawn if the gap is larger than the value of
@code{auto-knee-gap} plus the width of the beam object (which
depends on the duration of the notes and the slope of the beam).
By default @code{auto-knee-gap} is set to 5.5 staff spaces.
@seealso
-Notation Reference: @ref{Manual beams}, @ref{Setting automatic beam behavior}.
+Notation Reference:
+@ref{Manual beams},
+@ref{Setting automatic beam behavior}.
+
+Installed Files:
+@file{scm/auto-beam.scm}.
Snippets:
-@lsrdir{Rhythms,Rhythms}
+@rlsr{Rhythms}.
-Internals Reference: @internalsref{Beam}.
+Internals Reference: @rinternals{Beam}.
@knownissues
In order to add a rule to the list, use
@example
-#(override-auto-beam-setting '(be p q n m) a b [context])
+#(override-auto-beam-setting
+ '(beam-limit beam-numerator beam-denominator
+ time-signature-numerator time-signature-denominator)
+ moment-numerator moment-denominator [context])
@end example
@itemize
-@item @code{be} is either @code{begin} or @code{end}.
+@item @code{beam-limit} is the type of automatic beam limit
+defined, either @code{begin} or @code{end}.
-@item @code{p/q} is the duration of the note for which you want
-to add a rule. A beam is considered to have the duration of its
-shortest note. Set @code{p} and @code{q} to @code{'*'} to
-have this apply to any beam.
+@item @code{beam-numerator/beam-denominator} is the beam duration
+for which you want to add a rule. A beam is considered to have
+the duration of its shortest note. Set @code{beam-numerator} and
+@code{beam-denominator} to @code{'*'} to
+have this rule apply beams of any duration.
-@item @code{n/m} is the time signature to which
-this rule should apply. Set @code{n} and @code{m} to @code{'*'}
-to have this apply in any time signature.
+@item @code{time-signature-numerator/time-signature-denominator}
+is the time signature to which
+this rule should apply. Set @code{time-signature-numerator} and
+@code{time-signature-denominator} to @code{'*'}
+to have this rule apply in any time signature.
-@item @code{a/b} is the position in the bar at which the beam should
-begin/end.
+@item @code{monent-numerator/moment-denominator} is the position
+in the bar at which the beam should
+begin or end.
@item @code{context} is optional, and it specifies the context at which
the change should be made. The default is @code{'Voice}.
@end itemize
+TODO -- convert to music example
For example, if automatic beams should always end on the first quarter
note, use
@lilypond[quote,fragment,ragged-right,verbatim,relative=2]
\time 2/4
+% end 1/16 beams for all time signatures at the 1/16 moment
#(override-auto-beam-setting '(end 1 16 * *) 1 16)
a16 a a a a a a a |
a32 a a a a16 a a a a a |
+% end 1/32 beams for all time signatures at the 1/16 moment
#(override-auto-beam-setting '(end 1 32 * *) 1 16)
a32 a a a a16 a a a a a |
@end lilypond
@lilypond[quote,fragment,ragged-right,verbatim,relative=2]
\time 5/8
+% end beams of all durations in 5/8 time signature at the 2/8 moment
#(override-auto-beam-setting '(end * * 5 8) 2 8)
c8 c d d d
\time 4/4
c8 c d d d
@end lilypond
-You can also remove a previously set beam-ending rule by using
+Existing auto-beam rules are removed by using
@example
-#(revert-auto-beam-setting '(be p q n m) a b [context])
+#(revert-auto-beam-setting
+ '(beam-limit beam-numerator beam-denominator
+ time-signature-numerator time-signature-denominator)
+ moment-numerator moment-denominator [context])
@end example
@noindent
-@code{be}, @code{p}, @code{q}, @code{n}, @code{m}, @code{a},
-@code{b} and @code{context} are the same as above. Note that the
-default rules are specified in @file{scm/@/auto@/-beam@/.scm},
+@code{beam-limit}, @code{beam-numerator}, @code{beam-denominator},
+@code{time-signature-numerator}, @code{time-signature-denominator},
+@code{moment-numerator}, @code{moment-denominator} and @code{context}
+are the same as above. Note that the default auto-beaming rules are
+specified in @file{scm/@/auto@/-beam@/.scm},
so you can revert rules that you did not explicitly create.
@lilypond[quote,fragment,ragged-right,verbatim,relative=2]
\time 4/4
a16 a a a a a a a a a a a a a a a
+% undo a rule ending 1/16 beams in 4/4 time at 1/4 moment
#(revert-auto-beam-setting '(end 1 16 4 4) 1 4)
a16 a a a a a a a a a a a a a a a
@end lilypond
@seealso
Snippets:
-@lsrdir{Rhythms,Rhythms}
+@rlsr{Rhythms}.
@node Manual beams
@subsubsection Manual beams
@cindex beams, manual
+@funindex ]
+@funindex [
In some cases it may be necessary to override the automatic
beaming algorithm. For example, the autobeamer will not put beams
}
@end lilypond
+@funindex \noBeam
Individual notes may be marked with @code{\noBeam} to prevent them
from being beamed:
\time 2/4 c8 c\noBeam c c
@end lilypond
-@funindex ]
-@funindex [
-
@funindex stemLeftBeamCount
@funindex stemRightBeamCount
with only one beam on the left side, i.e., the eighth-note beam of
the group as a whole.
+TODO -- no difference based on stemLeftBeamCount in this example
@lilypond[quote,ragged-right,fragment,relative=1,verbatim]
{
f8[ r16 f g a]
@subsubsection Feathered beams
@cindex beams, feathered
-@funindex \featherDurations
+@funindex \featherDurations
+
+TODO -- this section relies on overrides. We need to either add
+a predefined, move this to snippets (whole section), or violate
+policy for this section.
Feathered beams are used to indicate that a small group of notes
should be played at an increasing (or decreasing) tempo, without
-changing the overall tempo of the piece. The extent of the
+changing the overall tempo of the piece. The extent of the
feathered beam must be indicated manually using @code{[} and
-@code{]}, and the beam feathering is turned on by specifying a
+@code{]}, and the beam feathering is turned on by specifying a
direction to the @code{Beam} property @code{grow-direction}.
If the placement of the notes and the sound in the MIDI output
The square brackets
show the extent of the beam and the braces show
-which notes are to have their durations modified. Normally
+which notes are to have their durations modified. Normally
these would delimit the same group of notes, but this is not
-required: the two commands are independent.
+required: the two commands are independent.
+
+@c TODO -- eliminate "Talking through code"
In the following example the eight 16th notes occupy exactly the
same time as a half note, but the first note is one half as long
@end lilypond
@noindent
-The spacing in the printed output represents the
+The spacing in the printed output represents the
note durations only approximately, but the midi output is exact.
+@c TODO -- resolve whether or not midi is capitalized -- policy
+@c decision needed
+
@knownissues
The @code{\featherDurations} command only works with very short
@seealso
Snippets:
-@lsrdir{Rhythms,Rhythms}
+@rlsr{Rhythms}.
@menu
-* Bar lines::
-* Bar numbers::
-* Bar and bar number checks::
-* Rehearsal marks::
+* Bar lines::
+* Bar numbers::
+* Bar and bar number checks::
+* Rehearsal marks::
@end menu
@node Bar lines
Bar lines delimit measures, and are also used to indicate
repeats. Normally, simple bar lines are automatically inserted
-into the printed output at places based on the current time
-signature.
+into the printed output at places based on the current time
+signature.
-The simple bar lines inserted automatically can be changed to
+The simple bar lines inserted automatically can be changed to
other types with the @code{\bar} command. For example, a closing
double bar line is usually placed at the end of a piece:
e4 d c2 \bar "|."
@end lilypond
+@c TODO -- make this warning more clear. What does it mean?
@warning{An incorrect duration can lead to poorly formatted
music.}
-
-It is not invalid if the final note in a measure does not
-end on the automatically entered bar line: the note is assumed
+
+@c TODO -- check this. I think this behavior no longer happens
+@c with completion_heads_engraver, but it may with note_heads_engraver
+@c Make an example showing the problem
+
+It is not invalid if the final note in a measure does not
+end on the automatically entered bar line: the note is assumed
to carry over into the next measure. But if a long sequence
of such carry-over measures appears the music can appear compressed
or even flowing off the page. This is because automatic line
-breaks happen only at the end of complete measures, i.e., where
+breaks happen only at the end of complete measures, i.e., where
the end of a note coincides with the end of a measure.
@cindex line breaks
@cindex measure lines, invisible
Line breaks are also permitted at manually inserted bar lines
-even within incomplete measures. To allow a line break without
+even within incomplete measures. To allow a line break without
printing a bar line, use
@example
@noindent
This will insert an invisible bar line and allow (but not
-force) a line break to occur at this point. The bar number
-counter is not increased. To force a line break see
+force) a line break to occur at this point. The bar number
+counter is not increased. To force a line break see
@ref{Line breaking}.
This and other special bar lines may be inserted manually at any
point. When they coincide with the end of a measure they replace
-the simple bar line which would have been inserted there
+the simple bar line which would have been inserted there
automatically. When they do not coincide
with the end of a measure the specified bar line is inserted at that
point in the printed output. Such insertions do not affect
-the calculation and placement of subsequent automatic bar lines.
+the calculation and placement of subsequent automatic bar lines.
The simple bar line and four types of double bar line are available
for manual insertion:
In addition, you can specify @code{"||:"}, which is equivalent to
@code{"|:"} except at line breaks, where it gives a double bar
line at the end of the line and a start repeat at the beginning of
-the next line.
+the next line.
@lilypond[quote,ragged-right,relative=2,fragment,verbatim]
\override Score.RehearsalMark #'padding = #3
c c c c
-\bar "||:"
+\bar "||:"
c c c c \break
-\bar "||:"
+\bar "||:"
c c c c
@end lilypond
In scores with many staves, a @code{\bar} command in one staff is
automatically applied to all staves. The resulting bar lines are
connected between different staves of a @code{StaffGroup},
-@code{PianoStaff}, or @code{GrandStaff}.
+@code{InnerStaffGroup}, @code{PianoStaff}, or @code{GrandStaff}.
@lilypond[quote,ragged-right,fragment,verbatim]
<<
@funindex defaultBarType
The command @code{\bar }@var{bartype} is a shortcut for
-@code{\set Timing.whichBar = }@var{bartype}. A bar line is
+@code{\set Timing.whichBar = }@var{bartype}. A bar line is
created whenever the @code{whichBar} property is
-set.
+set.
The default bar type used for automatically inserted bar lines is
@code{"|"}. This may be changed at any time
-with @code{\set Timing.defaultBarType = }@var{bartype}.
+with @code{\set Timing.defaultBarType = }@var{bartype}.
@seealso
@c @ref{System start delimiters}.
Snippets:
-@lsrdir{Rhythms,Rhythms}
+@rlsr{Rhythms}.
-Internals Reference: @internalsref{BarLine} (created at
-@internalsref{Staff} level), @internalsref{SpanBar} (across
-staves), @internalsref{Timing_translator} (for Timing
+Internals Reference: @rinternals{BarLine} (created at
+@rinternals{Staff} level), @rinternals{SpanBar} (across
+staves), @rinternals{Timing_translator} (for Timing
properties).
example bar numbers are printed at all possible places:
@lilypond[verbatim,ragged-right,quote,fragment,relative]
-\override Score.BarNumber #'break-visibility = ##(#t #t #t)
+\override Score.BarNumber #'break-visibility = #'#(#t #t #t)
\set Score.currentBarNumber = #11
\bar "" % Permit first bar number to be printed
c1 c c c
except at the end of the line:
@lilypond[verbatim,ragged-right,quote,fragment,relative]
-\override Score.BarNumber #'break-visibility = ##(#f #t #t)
+\override Score.BarNumber #'break-visibility = #'#(#f #t #t)
\set Score.currentBarNumber = #11
\bar "" % Permit first bar number to be printed
% Print a bar number every second measure
@cindex bar number, format
The size of the bar number may be changed. This is illustrated
-in the following example, which also shows how to enclose bar
+in the following example, which also shows how to enclose bar
numbers in boxes and circles, and shows an alternative way
of specifying @code{#(#f #t #t)} for @code{break-visibility}.
\override Score.BarNumber #'break-visibility
= #end-of-line-invisible
-% Increase the size of the bar number by 2
+% Increase the size of the bar number by 2
\override Score.BarNumber #'font-size = #2
\repeat unfold 3 { c1 } \bar "|"
Bar numbers by default are left-aligned to their parent object.
This is usually the left edge of a line or, if numbers are printed
within a line, the left bar line of the measure. The numbers may also
-be positioned directly on the bar line or right-aligned to the
+be positioned directly on the bar line or right-aligned to the
bar line:
@lilypond[verbatim,ragged-right,quote,fragment,relative]
\set Score.currentBarNumber = #111
-\override Score.BarNumber #'break-visibility = ##(#t #t #t)
+\override Score.BarNumber #'break-visibility = #'#(#t #t #t)
% Increase the size of the bar number by 2
\override Score.BarNumber #'font-size = #2
% Print a bar number every second measure
@seealso
Snippets:
-@lsrdir{Rhythms,Rhythms}
+@rlsr{Rhythms}.
-Internals Reference: @internalsref{BarNumber}.
+Internals Reference: @rinternals{BarNumber}.
@knownissues
Bar numbers may collide with the top of the
-@internalsref{StaffGroup} bracket, if there is one. To solve
-this, the @code{padding} property of @internalsref{BarNumber} can
+@rinternals{StaffGroup} bracket, if there is one. To solve
+this, the @code{padding} property of @rinternals{BarNumber} can
be used to position the number correctly.
Bar numbers may only be printed at bar lines; to print a bar
@funindex |
Bar checks help detect errors in the entered durations.
-A bar check may be entered using the bar symbol, @code{|},
-at any place where a bar line is expected to fall.
-If bar check lines are encountered at other places,
+A bar check may be entered using the bar symbol, @code{|},
+at any place where a bar line is expected to fall.
+If bar check lines are encountered at other places,
a list of warnings is printed in the log file,
-showing the line numbers and lines
+showing the line numbers and lines
in which the bar checks failed. In the next
example, the second bar check will signal an error.
correcting input is by scanning for failed bar checks and
incorrect durations.
+If successive bar checks are off by the same musical interval,
+only the first warning message is displayed. This allows the
+warning to focus on the source of the timing error.
+
+
@funindex |
@funindex pipeSymbol
-It is also possible to redefine the action taken when a bar check
-or pipe symbol, @code{|}, is encountered in the input, so that
-it does something other than a bar check. This is done by
-assigning a music expression to @code{pipeSymbol}.
-In the following example @code{|} is set to insert a double bar
-line wherever it appears in the input, rather than checking
+It is also possible to redefine the action taken when a bar check
+or pipe symbol, @code{|}, is encountered in the input, so that
+it does something other than a bar check. This is done by
+assigning a music expression to @code{pipeSymbol}.
+In the following example @code{|} is set to insert a double bar
+line wherever it appears in the input, rather than checking
for end of bar.
@lilypond[quote,ragged-right,verbatim]
pipeSymbol = \bar "||"
-{
+{
c'2 c'2 |
c'2 c'2
c'2 | c'2
@seealso
Snippets:
-@lsrdir{Rhythms,Rhythms}
+@rlsr{Rhythms}.
@node Rehearsal marks
@seealso
-Snippets:
-@lsrdir{Rhythms,Rhythms}
-
-This manual: @ref{The Feta font}, @ref{Formatting text}.
-
-Internals Reference: @internalsref{RehearsalMark}.
+This manual:
+@ref{The Feta font},
+@ref{Formatting text}.
-Init files: @file{scm/@/translation@/-functions@/.scm} contains
+Installed Files:
+@file{scm/@/translation@/-functions@/.scm} contains
the definition of @code{format-mark-numbers} and
@code{format-mark-letters}. They can be used as inspiration for
other formatting functions.
-Examples: @c @lsr{parts,rehearsal-mark-numbers.ly}
+Snippets:
+@rlsr{Rhythms}.
+Internals Reference: @rinternals{RehearsalMark}.
+
+Examples: @c @lsr{parts,rehearsal-mark-numbers.ly}
@node Special rhythmic concerns
@subsection Special rhythmic concerns
@menu
-* Grace notes::
-* Aligning to cadenzas::
-* Time administration::
+* Grace notes::
+* Aligning to cadenzas::
+* Time administration::
@end menu
@node Grace notes
@cindex appoggiatura
@cindex acciaccatura
-Grace notes are ornaments that are written out. They are made with
-the @code{\grace} command. By prefixing this keyword to a music
-expression, a new one is formed, which will be printed in a
-smaller font and takes up no logical time in a measure.
+Grace notes are ornaments that are written out. Grace notes
+are printed in a smaller font and take up no logical time
+in a measure.
@lilypond[quote,ragged-right,relative=2,verbatim,fragment]
c4 \grace c16 c4
-\grace { c16[ d16] } c2 c4
+\grace { c16[ d16] } c2
@end lilypond
-Two special forms of the @code{\grace} command exist.
-An @emph{acciaccatura}, which should be played as very short,
-is denoted by a slurred small note with a slashed stem. The
-@emph{appoggiatura}, a grace note that takes a fixed fraction of the
-main note, is denoted as a slurred note in small print without
-a slash. They are entered with the commands @code{\acciaccatura}
-and @code{\appoggiatura}, as demonstrated in the following
-example:
+Lilypond also supports two special types of grace notes, the
+@emph{acciaccatura}--an unmeasured grace note indicated by a slurred
+small note with a slashed stem--and the @emph{appoggiatura}, which
+takes a fixed fraction of the main note and appears in small print
+without a slash.
@lilypond[quote,ragged-right,relative=2,verbatim,fragment]
-b4 \acciaccatura d8 c4
+\grace c8 b4
+\acciaccatura d8 c4
\appoggiatura e8 d4
\acciaccatura { g16[ f] } e4
@end lilypond
-@noindent
-@code{\acciaccatura} and @code{\appoggiatura} start a slur,
-@code{\grace} does not.
-
The placement of grace notes is synchronized between different
staves. In the following example, there are two sixteenth grace
notes for every eighth grace note
@lilypond[quote,ragged-right,relative=2,verbatim,fragment]
-<< \new Staff { e4 \grace { c16[ d e f] } e4 }
- \new Staff { c4 \grace { g8[ b] } c4 } >>
+<< \new Staff { e2 \grace { c16[ d e f] } e2 }
+ \new Staff { c2 \grace { g8[ b] } c2 } >>
@end lilypond
@funindex \afterGrace
notes following the main note.
@lilypond[quote,ragged-right,verbatim,relative=2,fragment]
-c1 \afterGrace d1 { c16[ d] } c4
+c1 \afterGrace d1 { c16[ d] } c1
@end lilypond
-This will put the grace notes after a @q{space} lasting 3/4 of the
-length of the main note. The fraction 3/4 can be changed by
-setting @code{afterGraceFraction}, i.e.,
-
-@example
-#(define afterGraceFraction (cons 7 8))
-@end example
+This will put the grace notes after a space lasting 3/4 of the
+length of the main note. The default fraction 3/4 can be changed by
+setting @code{afterGraceFraction}. The following example shows
+the results from setting the space at the default, at 15/16, and
+finally at 1/2 of the main note.
-@noindent
-will put the grace note at 7/8 of the main note.
+@lilypond[quote,ragged-right,verbatim,relative=2,fragment]
+<<
+ \new Staff {
+ c1 \afterGrace d1 { c16[ d] } c1
+ }
+ \new Staff {
+ #(define afterGraceFraction (cons 15 16))
+ c1 \afterGrace d1 { c16[ d] } c1
+ }
+ \new Staff {
+ #(define afterGraceFraction (cons 1 2))
+ c1 \afterGrace d1 { c16[ d] } c1
+ }
+>>
+@end lilypond
-The same effect can be achieved manually by doing
+The space between the main note and the grace note may also be
+specified using spacers. The following example places the grace
+note after a space lasting 7/8 of the main note.
@lilypond[quote,ragged-right,fragment,verbatim,relative=2]
\new Voice {
<< { d1^\trill_( }
- { s2 \grace { c16[ d] } } >>
- c4)
+ { s2 s4. \grace { c16[ d] } } >>
+ c1)
}
@end lilypond
-@noindent
-By adjusting the duration of the skip note (here it is a
-half-note), the space between the main note and the grace
-may be adjusted.
-
A @code{\grace} music expression will introduce special
typesetting settings, for example, to produce smaller type, and
-set directions. Hence, when introducing layout tweaks, they
-should be inside the grace expression, for example,
+set directions. Hence, when introducing layout tweaks to
+override the special settings, they should be placed inside
+the grace expression. The overrides should also be reverted
+inside the grace expression. Here, the grace note's default stem
+direction is overriden and then reverted.
@lilypond[quote,ragged-right,fragment,verbatim,relative=2]
\new Voice {
f16->
\stemNeutral
}
- g4
+ g4 e c2
}
@end lilypond
-@noindent
-The overrides should also be reverted inside the grace expression.
+
+@cindex stem, with slash
+
+
+@snippets
+
+The slash through the stem found in @emph{acciaccatura}s can be applied
+in other situations:
+
+@lilypond[quote,ragged-right,fragment,verbatim,relative=2]
+\relative c'' {
+ \override Stem #'stroke-style = #"grace"
+ c8( d2) e8( f4)
+}
+@end lilypond
The layout of grace expressions can be changed throughout the
music using the function @code{add-grace-property}. The following
example undefines the @code{Stem} direction for this grace, so
that stems do not always point up.
-@example
-\new Staff @{
- #(add-grace-property 'Voice 'Stem 'direction '())
- @dots{}
-@}
-@end example
+@lilypond[quote,ragged-right,fragment,verbatim,relative=2]
+\relative c'' {
+ \new Staff {
+ #(add-grace-property 'Voice 'Stem 'direction ly:stem::calc-direction)
+ #(remove-grace-property 'Voice 'Stem 'direction)
+ \new Voice {
+ \acciaccatura { f16 } g4
+ \grace { d16[ e] } f4
+ \appoggiatura { a,32[ b c d] } e2
+ }
+ }
+}
+@end lilypond
-@noindent
Another option is to change the variables @code{startGraceMusic},
@code{stopGraceMusic}, @code{startAcciaccaturaMusic},
@code{stopAcciaccaturaMusic}, @code{startAppoggiaturaMusic},
@code{stopAppoggiaturaMusic}. The default values of these can be
-seen in the file @file{ly/@/grace@/-init@/.ly}. By redefining
+seen in the file @code{ly/@/grace@/-init@/.ly}. By redefining
them other effects may be obtained.
-@cindex stem, with slash
-
-@noindent
-The slash through the stem in @emph{acciaccatura}s can be obtained in
-other situations by @code{\override Stem #'stroke-style =
-#"grace"}.
-
-
-@snippets
-
-Grace notes may be forced to use align with regular notes
-in other staves by setting @code{strict-grace-spacing} to
-##t:
+Grace notes may be forced to align with regular notes
+in other staves:
-@lilypond[relative=2,ragged-right]
-<<
- \override Score.SpacingSpanner #'strict-grace-spacing = ##t
- \new Staff {
- c'4
- \afterGrace
- c'4
- { c'16[ c'8 c'16] }
- c'4
- }
- \new Staff {
- c'16[ c'16 c'16 c'16]
- c'16[ c'16 c'16 c'16]
- c'4
- }
->>
+@lilypond[verbatim,quote,ragged-right]
+\relative c'' {
+ <<
+ \override Score.SpacingSpanner #'strict-grace-spacing = ##t
+ \new Staff {
+ c4
+ \afterGrace c4 { c16[ c8 c16] }
+ c4 r
+ }
+ \new Staff {
+ c16 c c c c c c c c4 r
+ }
+ >>
+}
@end lilypond
Music Glossary:
@rglos{grace notes},
@rglos{acciaccatura},
-@rglos{appoggiatura}
+@rglos{appoggiatura}.
-Snippets:
-@lsrdir{Rhythms,Rhythms}
+Installed Files: @file{ly/@/grace@/-init@/.ly}.
+
+Snippets: @rlsr{Rhythms}.
-Internals Reference: @internalsref{GraceMusic}.
+Internals Reference: @rinternals{GraceMusic}.
@knownissues
-A multi-note beamed @emph{acciaccatura} is printed without a slash,
+A multi-note beamed @emph{acciaccatura} is printed without a slash,
and looks exactly the same as a multi-note beamed
@emph{appoggiatura}.
@c TODO Add link to LSR snippet to add slash when available
staves without, for example,
@lilypond[quote,ragged-right,relative=2,verbatim,fragment]
-<< \new Staff { e4 \bar "|:" \grace c16 d4 }
- \new Staff { c4 \bar "|:" d4 } >>
+<< \new Staff { e4 \bar "|:" \grace c16 d2. }
+ \new Staff { c4 \bar "|:" d2. } >>
@end lilypond
@noindent
durations in the other staves. For the above example
@lilypond[quote,ragged-right,relative=2,verbatim,fragment]
-<< \new Staff { e4 \bar "|:" \grace c16 d4 }
- \new Staff { c4 \bar "|:" \grace s16 d4 } >>
+<< \new Staff { e4 \bar "|:" \grace c16 d2. }
+ \new Staff { c4 \bar "|:" \grace s16 d2. } >>
@end lilypond
+Predefined commands, like @code{\voiceOne}, which are intended to
+change the behaviour of the notation after a grace note, may not
+be effective if placed immediately before the grace note -- they
+should be placed after it.
+
Grace sections should only be used within sequential music
expressions. Nesting or juxtaposing grace sections is not
supported, and might produce crashes or other errors.
@cindex aligning to cadenza
In an orchestral context, cadenzas present a special problem: when
-constructing a score that includes a cadenza, all other
-instruments should skip just as many notes as the length of the
-cadenza, otherwise they will start too soon or too late.
+constructing a score that includes a measured cadenza or other solo
+passage, all other instruments should skip just as many notes as the
+length of the cadenza, otherwise they will start too soon or too late.
-A solution to this problem is to use the functions
+One solution to this problem is to use the functions
@code{mmrest-of-length} and @code{skip-of-length}. These Scheme
-functions take a piece of music as argument, and generate a multi-measure
-rest or @code{\skip}, exactly as long as the piece. The use of
-@code{mmrest-of-length} is demonstrated in the following example.
+functions take a defined piece of music as an argument and generate a
+multi-measure rest or @code{\skip} exactly as long as the piece.
@lilypond[verbatim,ragged-right,quote]
-cadenza = \relative c' {
- c4 d8 << { e f g } \\ { d4. } >>
- g4 f2 g4 g
+MyCadenza = \relative c' {
+ c4 d8 e f g g4
+ f2 g4 g
}
\new GrandStaff <<
- \new Staff { \cadenza c'4 }
+ \new Staff {
+ \MyCadenza c'1
+ \MyCadenza c'1
+ }
\new Staff {
- #(ly:export (mmrest-of-length cadenza))
- c'4
+ #(ly:export (mmrest-of-length MyCadenza))
+ c'1
+ #(ly:export (skip-of-length MyCadenza))
+ c'1
}
>>
@end lilypond
@seealso
+Music Glossary:
+@rglos{cadenza}.
+
Snippets:
-@lsrdir{Rhythms,Rhythms}
+@rlsr{Rhythms}.
@node Time administration
The following properties of @code{Timing} are used
to keep track of timing within the score.
-
+
@cindex bar number
@cindex measure number
@item measurePosition
The point within the measure where we currently are. This
quantity is reset by subtracting @code{measureLength} whenever
-@code{measureLength} is reached or exceeded. When that happens,
+@code{measureLength} is reached or exceeded. When that happens,
@code{currentBarNumber} is incremented.
@item timing
@end table
Timing can be changed by setting any of these variables
-explicitly. In the next example, the default 4/4 time
+explicitly. In the next example, the default 4/4 time
signature is printed, but @code{measureLength} is set to 5/4.
At 4/8 through the third measure, the @code{measurePosition} is
advanced by 1/8 to 5/8, shortening that bar by 1/8.
This manual: @ref{Bar numbers}, @ref{Unmetered music}
Snippets:
-@lsrdir{Rhythms,Rhythms}
-
-Internals Reference: @internalsref{Timing_translator},
-@internalsref{Score}
-
-
-
-
-
-
-
-
-
-
-
-
-
+@rlsr{Rhythms}.
+Internals Reference: @rinternals{Timing_translator},
+@rinternals{Score}
projects / lilypond.git / blobdiff