Hello everybody,
I’ve built some music functions to handle a large, multi-section piece,
and ran into a strange problem, which I could boil down to the attached
example.
If the concat-part function is called on the \key expression multiple
times in parallel, the \key expressions are accumulated in a way I’ve
never seen before. Why would that be?
The original piece is in five parts, and having A sharp major with ten
sharps pop up on a score by di Lasso was somewhat funny :-)
Best, Simon
\version "2.19.39"
global.1 = { \key c \major }
concat-part =
#(define-music-function (al) (list?)
(make-sequential-music (map cdr al)))
buildPart =
#(define-music-function () ()
#{
\new Voice <<
\concat-part \global
{ c'1 }
>>
#})
\transpose c d <<
\buildPart
\buildPart
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