The problem is how you apply \unfoldrepeats. Actually, apart from unfolding the repeats, what you actually do is to say
\score {
<<
{
\new DrumStaff { \drumContents }
\context Staff = trombone \trombone
}
>>Since you have an {...} directly inside the <<...>>, the
<<...>> will only contain a sequence of drum notes followed by
the trombone notes.I haven't tried, but I'm sure that the following should work
as you expect.
\score {
\unfoldrepeats <<
\new DrumStaff { \drumContents }
\context Staff = trombone \trombone
>>
/Mats
John Comeau wrote:
I'm probably doing something wrong, but have tried several permutations of wrapping things inside one another with the same result: the tracks follow one another in the MIDI output though the graphical representation is correct. Googling and searching archives for unfoldrepeats turns up nothing of value that I could see.
downtown_sandiego.ly:
tromboneNotes = \relative c { c16 c c8-. r c16 c d d d8-. r d16 d e e e8-. r e16 e f f f8-. r f16 f e16 e e8-. r e16 e d d d8-. r d16 d e e e8-. d16 d d8-. e16 e e8-. d16 d d8-. } trombone = { \time 4/4 \set Staff.instrument = #"Trombone" \set Staff.midiInstrument = "trombone" \clef bass \repeat volta 2 { \context Staff << \tromboneNotes >> } } drumNotes = \drummode { hh8 sn hh sn hh sn hh sn hh8 sn hh sn hh sn hh sn hh8 sn hh sn hh sn hh sn hh8 sn hh sn hh sn hh sn } drumContents = { \set DrumStaff.instrument = #"Drums" \repeat volta 2 { \time 4/4 << \new DrumVoice { \voiceOne \drumNotes } >> } } \score { << \context Staff = trombone \trombone \new DrumStaff { \drumContents } >> \layout { } } \score { << \unfoldrepeats { \new DrumStaff { \drumContents } \context Staff = trombone \trombone } >> \midi { \tempo 4=120 } }
Dump of downtown_sandiego.midi (http://jcomeau.com/src/midi/midi.py, symlink to mididump)
[ # midi file dump [ # dump midi header 'MThd', 6, # chunk length 1, # MIDI file format 3, # Tracks 0x180, # Time Division ], # end of midi header dump [ # midi track 1 'MTrk', 248, # chunk length [0, 0xff, 0x1, 39, 'Creator: GNU LilyPond 2.4.2 '], [0, 0xff, 0x1, 58, 'Generated automatically by: GNU LilyPond 2.4.2 '] , [0, 0xff, 0x1, 60, 'at Sun Jan 9 16:22:19 2005 '], [0, 0xff, 0x1, 60, 'at Sun Jan 9 16:22:19 2005 '], [0, 0xff, 0x3, 7, 'Track 0'], [0, 0xff, 0x2f, 0, ''], ], # end midi track [ # midi track 2 'MTrk', 625, # chunk length [0, 0xc9, 0], # change instrument for channel 9 to Acoustic Grand Piano [0, 0xff, 0x4, 5, 'drums'], [0, 0x99, 0x2a, 0x7f], # Note On, "gf,", channel 9, velocity 127 [0, 0xff, 0x58, 4, '\x04\x02\x12\x08'], [0, 0xff, 0x3, 14, 'uniqueContext2'], [0, 0xff, 0x51, 3, '\x07\xa1 '], [192, 0x89, 0x2a, 0x40], # Note Off, "gf,", channel 9, velocity 64 [0, 0x99, 0x26, 0x7f], # Note On, "d,", channel 9, velocity 127 [192, 0x89, 0x26, 0x40], # Note Off, "d,", channel 9, velocity 64 [0, 0x99, 0x2a, 0x7f], # Note On, "gf,", channel 9, velocity 127 [192, 0x89, 0x2a, 0x40], # Note Off, "gf,", channel 9, velocity 64 [0, 0x99, 0x26, 0x7f], # Note On, "d,", channel 9, velocity 127 [192, 0x89, 0x26, 0x40], # Note Off, "d,", channel 9, velocity 64 ...[snip] [0, 0xff, 0x2f, 0, ''], ], # end midi track [ # midi track 3 'MTrk', 751, # chunk length # # *** NOTE DELTA OF NEXT EVENT -- trombone follows drums! *** # [12288, 0xc1, 57], # change instrument for channel 1 to Trombone [0, 0xff, 0x4, 8, 'trombone'], [0, 0x91, 0x30, 0x7f], # Note On, "c", channel 1, velocity 127 [0, 0xff, 0x58, 4, '\x04\x02\x12\x08'], [0, 0xff, 0x3, 8, 'trombone'], [0, 0xff, 0x51, 3, '\x07\xa1 '], [96, 0x81, 0x30, 0x40], # Note Off, "c", channel 1, velocity 64 [0, 0x91, 0x30, 0x7f], # Note On, "c", channel 1, velocity 127 [96, 0x81, 0x30, 0x40], # Note Off, "c", channel 1, velocity 64 [0, 0x91, 0x30, 0x7f], # Note On, "c", channel 1, velocity 127 [192, 0x81, 0x30, 0x40], # Note Off, "c", channel 1, velocity 64 [192, 0x91, 0x30, 0x7f], # Note On, "c", channel 1, velocity 127 [96, 0x81, 0x30, 0x40], # Note Off, "c", channel 1, velocity 64 ...[snip] [0, 0xff, 0x2f, 0, ''], ], # end midi track ] # end midi file
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