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Writing music in parallel
Music for multiple parts can be interleaved in input code. The
function \parallelMusic accepts a list with the names of a
number of variables to be created, and a musical expression. The
content of alternate measures from the expression become the value
of the respective variables, so you can use them afterwards to
print the music.
Note: Bar checks | must be used, and the measures must
be of the same length.
\parallelMusic voiceA,voiceB,voiceC { % Bar 1 r8 g'16 c'' e'' g' c'' e'' r8 g'16 c'' e'' g' c'' e'' | r16 e'8.~ 4 r16 e'8.~ 4 | c'2 c'2 | % Bar 2 r8 a'16 d'' f'' a' d'' f'' r8 a'16 d'' f'' a' d'' f'' | r16 d'8.~ 4 r16 d'8.~ 4 | c'2 c'2 | } \new StaffGroup << \new Staff << \voiceA \\ \voiceB >> \new Staff { \clef bass \voiceC } >>
![[image of music]](../a8/lily-d559c2b3.png)
Relative mode may be used. Note that the \relative command
is not used inside \parallelMusic itself. The notes are
relative to the preceding note in the voice, not to the previous
note in the input – in other words, relative notes for
voiceA ignore the notes in voiceB.
\parallelMusic voiceA,voiceB,voiceC { % Bar 1 r8 g16 c e g, c e r8 g,16 c e g, c e | r16 e8.~ 4 r16 e8.~ 4 | c2 c | % Bar 2 r8 a,16 d f a, d f r8 a,16 d f a, d f | r16 d8.~ 4 r16 d8.~ 4 | c2 c | } \new StaffGroup << \new Staff << \relative c'' \voiceA \\ \relative c' \voiceB >> \new Staff \relative c' { \clef bass \voiceC } >>
![[image of music]](../d2/lily-8b646433.png)
This works quite well for piano music. This example maps four consecutive measures to four variables:
global = { \key g \major \time 2/4 } \parallelMusic voiceA,voiceB,voiceC,voiceD { % Bar 1 a8 b c d | d4 e | c16 d e fis d e fis g | a4 a | % Bar 2 e8 fis g a | fis4 g | e16 fis g a fis g a b | a4 a | % Bar 3 ... } \score { \new PianoStaff << \new Staff { \global << \relative c'' \voiceA \\ \relative c' \voiceB >> } \new Staff { \global \clef bass << \relative c \voiceC \\ \relative c \voiceD >> } >> }
![[image of music]](../5c/lily-808b4cce.png)
See also
Learning Manual: Organizing pieces with variables.
Snippets: Simultaneous notes.
| [ << Musical notation ] | [Top][Contents][Index] | [ Specialist notation >> ] |
| [ < Automatic part combining ] | [ Up : Multiple voices ] | [ Staff notation > ] |