* cluster::
* comma::
* common meter::
-* compound interval::
+* common time::
* complement::
+* compound interval::
+* compound meter::
+* compound time::
* conjunct movement::
* consonance::
* contralto::
* half rest::
* harmonic cadence::
* harmony::
+* hemiola::
* homophony::
* interval::
* inverted interval::
* polyphony::
* portato::
* presto::
+* proportion::
* Pythagorean comma::
* quadruplet::
* quarter note::
* sextuplet::
* shake::
* sharp::
+* simple meter::
* sixteenth note::
* sixteenth rest::
* sixth::
@node common meter
@section common meter
+@ref{common time}
+
@seealso
@ref{meter}.
+@node common time
+@section common time
+
+4/4 time. The symbol, which resembles a capital letter C derives from
+mensural notation (q.v.).
+
+@seealso
+
+@ref{meter}.
+
+
+@node complement
+@section complement
+
+ES: intervalo invertido,
+I: rivolto,
+F: intervalle complémentaire,
+D: Komplementärintervall,
+NL: complementair interval,
+DK: komplementærinterval,
+S: komplementärintervall (?),
+FI: täydentävä intervalli.
+
+@seealso
+
+@ref{inverted interval}.
+
+
@node compound interval
@section compound interval
@ref{interval}.
-@node complement
-@section complement
+@node compound meter
+@section compound meter
-ES: intervalo invertido,
-I: rivolto,
-F: intervalle complémentaire,
-D: Komplementärintervall,
-NL: complementair interval,
-DK: komplementærinterval,
-S: komplementärintervall (?),
-FI: täydentävä intervalli.
+ES: ?,
+I: ?,
+F: ?,
+D: ?,
+NL: ?,
+DK: ?,
+S: ?,
+FI: ?.
+
+A meter that includes a triplet subdivision within the beat, such as
+6/8, 9/8, 12/8.
@seealso
-@ref{inverted interval}.
+@ref{meter}, @ref{simple meter}.
+
+
+@node compound time
+@section compound time
+
+ES: ?,
+I: ?,
+F: ?,
+D: ?,
+NL: ?,
+DK: ?,
+S: ?,
+FI: ?.
+
+@ref{compound meter}
+
+@seealso
+
+@ref{meter}.
@node conjunct movement
Custodes were frequently used in music notation until the 16th
century. There were different appearences for different notation
styles. Nowadays, they have survived only in special forms of musical
-notation such as via the editio vaticana dating back to the beginning
+notation such as via the Editio Vaticana dating back to the beginning
of the 20th century
@lilypond
FI: da capo, alusta.
The term indicates repetition of the piece from the beginning to the
-end or to a certain place marked @emph{fine}. Mostly abbreviated as
+end or to a certain place marked @emph{fine}. Usually abbreviated as
@samp{D.C.}.
Three note harmony @ref{chord}.
+@node hemiola
+@section hemiola
+
+ES: ?,
+I: ?,
+F: ?,
+D: ?,
+NL: ?,
+DK: ?,
+S: ?,
+FI: ?.
+
+[From Greek: in Latin, @emph{sesquialtera}] The ratio 3:2. Refers to
+the use of three notes of equal value in the time normally occupied by
+of two notes of equal value. The resulting rhythm can be expressed in
+modern terms as a substitution (for example) of a bar in 3/2 for one
+of 6/4, or of a bar in 3/4 for one of 6/8. During the Baroque era,
+hemiola is most frequently as a special effect (or @emph{affect}) at
+cadences.
+
+@c TODO: prepare example - {\time 6/4 c2. c2. | c2 c c} or
+@c cont'd: {\time 6/4 c2. c2. | \time 3/2 c2 c2 c2 }
+
+@seealso
+
+@ref{mensural notation}, @ref{meter}
+
+
@node homophony
@section homophony
@node mensural notation
@section mensural notation
-@c TODO: add languages, definition, references
+@c FIXME: add languages
+
+ES: ?,
+I: ?,
+F: ?,
+D: ?,
+NL: ?,
+DK: ?,
+S: ?,
+FI: ?.
+
+@c TODO: add definition (inc. info on proportional notation)
+
+@c FIXME: add cross-references.
@node meter
@section meter
-ES: compás,
-I: tempo, metro,
+ES: tiempo, compás,
+I: tempo, misura,
F: indication de mesure, mesure,
D: Taktart, Metrum,
NL: maatsoort,
S: taktart,
FI: aika-arvo.
-The basic scheme of @ref{note value}s and @ref{accent}s which remains
-unaltered throughout a composition or a section of it. For instance,
-3/4 meter means that the basic @ref{note value}s are quarter notes and
-that a @ref{measure} consists of three of those. According to whether
-there are two, three, or four units to the measure, one speaks of
-@emph{duple} (2/2, 2/4, 2/8), @emph{triple} (3/2, 3/4, 3/8), or
-@emph{quadruple} (4/2, 4/4, 4/8) meter. 4/4 is also called common
-meter.
+The basic pattern of @ref{note value}s and @ref{accent}s that remains
+unaltered throughout a composition or a section of it. Meters can be
+@emph{duple} or @emph{triple} depending on how the beat is grouped in
+the composition (or in sections thereof):
+
+@itemize
+
+@item In duple meters, the beat recurs in groups of two.
+
+@item In triple meters, the beat recurs in groups of three.
+
+@end itemize
+
+Other recurrence patterns are possible:
+
+@itemize
+
+@item Quadruple meter: groups of four. A special case of duple meter.
+
+@item Quintuple meter: groups of five
+
+@item Sextuple meter: groups of six. A special case of:
+
+@itemize
+@item Duple meter, subdivided in three (less frequent); or
+@item Triple meter, subdivided in two (more frequent).
+@end itemize
+
+@item Septuple meter: groups of seven.
+
+@item etc.
+
+@end itemize
+
+Other than quadruple and sextuple meters, these other recurrence
+patterns were not frequently used prior to the 20th Century.
+
+In addition to classification by @emph{tactus}, meters can be further
+classified by how the tactus is subdivided: in two, the meter is
+@emph{simple}; in three, the meter is @emph{compound}.
+
+@itemize
+
+@item Simple meter
+
+@itemize
+@item duple: 2/2, 2/4, 2/8
+@item triple: 3/2, 3/4, 3/8
+@item quadruple: 4/2, 4/4 (also called common time), 4/8
+@end itemize
+
+@item Compound meter
+
+@itemize
+@item duple: 6/8
+@item triple: 9/8
+@item quadruple: 12/8
+@end itemize
+
+@end itemize
+
+Time signatures are placed at the beginning of a composition (or
+section) to indicate the meter. For instance, a piece written in
+simple triple meter with a beat on each quarter note has a time
+signature of 3/4.
+
+Simple duple meter:
+
+@lilypond[fragment,line-width=13.0\cm]
+\relative c'' {
+ \time 2/4
+ \key c \major
+ c4. d8 | e4 d | f e | d8 b c4 \bar "||"}
+@end lilypond
+
+Simple triple meter:
@lilypond[fragment,line-width=13.0\cm]
\relative c'' {
\time 3/4
- \key f \major
- c es d | c bes8 a bes4 | c es d | c2 \bar "||"}
+ \key c \minor
+ c es d8 c | d4 b g | d' f es8 d | es d c2 \bar "||"}
@end lilypond
+Simple quadruple meter (French folk tune, @emph{Au clair de la lune}):
+
+@lilypond[fragment,line-width=13.0\cm]
+\relative c'' {
+ \time 4/4
+ \key g \major
+ g4 g g a | b2 a | g4 b a a | g1 \bar "||"}
+@end lilypond
+
+Simple quintuple meter (B. Marcello, 1686-1739):
+
+@lilypond[fragment,line-width=13.0\cm]
+\relative c'' {
+ \time 5/4
+ \key c \major
+ r4 cis8 bis ais4 dis c8 ais |
+ aes4 bes8 aes ges4 aes f8 es \bar "||"}
+@end lilypond
+
+Compound duple meter:
+
@lilypond[fragment,line-width=13.0\cm]
\relative c' {
\time 6/8
\key f \major
- f8 f f f a16 g a f |
- c'8 c c c e16 d e c \bar "||"}
+ f8 f g a bes16 a g f |
+ g8 g bes a c16 a bes g
+ \bar "||"}
@end lilypond
+Compound triple meter (J.S. Bach, 1685-1750):
+
@lilypond[fragment,line-width=13.0\cm]
-\relative c'' {
- \time 5/4
- \key g \major
- d4 b8 g b d d c a4 |
- g8 g16 g g8 g16 g g8 fis16 g a8 fis16 e d4 \bar "||"}
+\relative c' {
+ \time 9/8
+ \key f \major
+ r8 g( a) b( d c) c( e d) |
+ d( c fis) g( d b) g( a b)
+ \bar "||"}
@end lilypond
+Compound quadruple meter (P. Yon, 1886-1943):
+
+@lilypond[fragment,line-width=13.0\cm]
+\relative c' {
+ \time 12/8
+ \key e \major
+ b8.( a16) gis8 a8.( gis16) fis8 gis8.( fis16) e8 fis4 b,8 |
+ e4 e8 fis( gis) a b4.~ b4 b8
+ \bar "||"}
+@end lilypond
+
+@seealso
+
+@ref{hemiola}, @ref{time signature}
+
@node metronome
@section metronome
Device indicating the exact tempo of a piece.
+@seealso
+
@ref{metronomic indication}.
@seealso
-@ref{interval}.
+@ref{ottava}, @ref{interval}.
@node ornament
@node ottava
@section ottava
-@c TODO
+@c TODO: translations
ES: ?,
I: ottava,
@itemize
-@item In instrumental or choral music the music for the single instrument
-or voice.
+@item In instrumental or choral music, the music for a single
+instrument or voice.
-@item in contrapuntal music @ref{counterpoint} the single melodic line
-of the contrapunctal web.
+@item in contrapuntal music, a single melodic line in the contrapuntal
+web.
@end itemize
+@seealso
+
+@ref{counterpoint}
+
@node pause
@section pause
denotes the highest possible degree of speed.
+@node proportion
+@section proportion
+
+ES: proporción,
+I: ?,
+F: proportion,
+D: ?,
+NL: ?,
+DK: ?,
+S: ?,
+FI: ?.
+
+[From Latin @emph{proportio}] In mensural notation, a ratio that
+expresses the relationship between the note values that follow with
+those that precede; or between the note values of a passage and an
+assumed @q{normal} relationship of note values to the metrical pulse.
+
+@c TODO: add an example or two. O => 4/3, and its modern equivalent
+
+@seealso
+
+@ref{mensural notation}
+
+
@node Pythagorean comma
@section Pythagorean comma
}
@end lilypond
-@c F: 'pause' if you mean a whole rest, 'silence' if you do not want to
-@c specify the rest's value.
-
@node rest
@section rest
S: paus,
FI: tauko.
+@c F: 'pause' if you mean a whole rest, 'silence' if you do not want to
+@c specify the rest's value.
+
@seealso
@ref{note value}.
@ref{accidental}.
+@node simple meter
+@section simple meter
+
+ES: ?,
+I: ?,
+F: ?,
+UK: ?,
+D: ?,
+NL: ?,
+DK: ?,
+S: ?,
+FI: ?.
+
+A meter in which the basic beat is subdivided in two: that is, a meter
+that does not include triplet subdivision of the beat.
+
+@seealso
+
+@ref{compound meter}, @ref{meter}.
+
+
@node sixteenth note
@section sixteenth note
S: taktartssignatur,
FI: tahtiosoitus.
+The sign placed at the beginning of a composition to indicate its
+meter. It most often takes the form of a fraction, but a few signs
+derived from mensural notation and proportions are also employed.
+
@seealso
-@ref{meter}.
+@ref{mensural notation}, @ref{meter}.
@node tone
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