I've got an 'include' file that renders a top-level script (separate file)
as a book comprising C, Bb and Eb parts. The C part \score block contains
\midi { }, usually commented out unless I want to sanity-check a new script.
I've been trying to include or exclude it (instead of commenting it in or
out) via a definition in the top-level script, e.g.,
includeMIDI = ##t
But I can't find a Scheme way to run MIDI, like
#(if (defined? 'includeMIDI) (midi (tempo 4=150))) ; clearly BAD CODE
How to write that line? - to work properly in a \score block.
How do I find the Scheme method of calling an arbitrary LilyPond function?
Thanks for your time and help.
-- Lee
