+++ /dev/null
-nsect(NAME)
-
-Octaves -- how to do pitches
-
-nsect(DESCRIPTION)
-
-The LilyPond input language, Mudela (help, silly name), should be easy
-to read and write. In my experience Mudela is already quite convenient
-for entering music. Every time I've entered a substantial piece of music,
-however, I found that I made quite a few mistakes. The MIDI output helps
-a lot with locating and correcting the errors. There's one type of error
-that seems to be frequent, stubborn and hard to catch, and that's the
-octavation error. The relative octave feature is an attempt to make
-Mudela a bit easier to write. In addition, this feature makes it harder
-to make octavation mistakes, yet if you made one, its a lot simpler to find
-and correct.
-
-Here's how it works.
-
-itemize(
-it()forget the old "\octave c';" command
-it()forget the old octave boundaries with octaves c .. c'
-)
-
-You can enter a piece of music in relative mode, by typing
-
-verb(
- \melodic \relative c { ... }
-)
-
-From then on, the pitch of a note will be the closest to the last one,
-assuming that large intervals are a lot more rare than small ones.
-Thus, you can enter a scale without using octavation quotes:
-
-verb(
- c d e f g a b c
-)
-
-the last c being an octave higher than the first. If you have to
-enter an interval that is greater than a fifth, you must specify
-whether the pitch goes up, using post-quotes:
-
-verb(
- c c' % octave up
- c g' % fifth up
-)
-
-or down, using pre-quotes:
-
-verb(
- c c, % octave down
- c f, % fifth down
-)
-
-nsect(CONVERTING)
-
-COMMENT(Old? don't understand -- jcn
-To convert a piece of music from the old absolute-octave notation to
-)
-To convert a piece of music from absolute-octave notation to
-relative octaves, lilypond provides the bf(-Q, --find-old-relative)
-COMMENT(
-urg, name was changed to 'old-relative'? It simply helps convert
-from absolute to relative, ie handy for mi2mu output?
-)
-feature to locate all big intervals in your music.
-
-First, edit the .ly file, add "\relative c" to all melodic chunks:
-
-verb(
- foo = \melodic \relative c { ... }
-)
-
-and remove all "\octave " commands. See the example file
-file(input/test/find-fifths.ly).
-
-Use lily to find the fifths:
-
-verb(
- lilypond -Q find-fifths.ly 2>&1 | tee fifths
- ...
- find-fifths.ly:3:18: warning: Interval greater than fourth, relative: g':
- c d c f c g
- c b, c g, c f, c c'' c
-
- find-fifths.ly:3:20: warning: Interval greater than fourth, relative: c,:
- c d c f c g c
- b, c g, c f, c c'' c
-)
-
-Then, load a copy of the original mudela file in your favourite editor,
-and let it parse the 'error file' file(intervals). First you remove all
-octavation quotes. Then, jumping from warning to warning, you enter quotes
-as suggested by LilyPond.
-