Hi,
I am trying to create a set of functions to help me set up songs with
divisi lyrics. When I generate a midi file with the unfolded music, I would
like it to have the different rhythms in the different voltas. I get some
unexpected results with regards to pitches.
I have tried to create a small example, the exhibits some of the same
challenges as what I am facing with my divisi helpers:
\version "2.24.1"
double =
#(define-music-function (music)(ly:music?)
(let ((notes (ly:music-property music 'elements)))
(make-music 'SequentialMusic
'elements
(list
(make-music 'SequentialMusic
'elements notes)
(make-music 'SequentialMusic
'elements notes)))))
\relative c' {
\double {e4 e}
}
There are several things that confuses me with the output of this:
1. The first note is an octave higher than I would expect (it is e'')
2. The second note is an octave higher than the first. The third and
fourth are the same as the first and second.
3. If I remove one of the "make-music" from the list, both remaining
notes get the same pitch at the expected e'.
4. If I change the music expression by lowering the last note an octave:
\double {e4 e,}
Then I will get all four notes on the same pitch (e').
It seems the musical construct I generate is confusing the relative
function. There are clearly some fundamentals regarding generating music
from functions that I have missed.
If someone could help shed some light on why I get the output I do, it
would be highly appreciated.
Best regards,
Morten
