Recalcitrant midi instruments

[T Högvall]

I'm a greenhorn, trying out Lilypond, first by writing small piano pieces, now attempting a woodwind quartet. Starting from the string q. template, making a few small adjustments, I get a working, compiling ly file, with piano voices then, of course, as they are the midi instrument default. Naturally I did attempt to put in the real instruments then , by including lines like

 

\set Staff.midiInstrument = #"clarinet"

 

in the score section of the ly file (see attached file). When I limit myself to including such a line for only one instrument things work out well, leaving the three other ones as a piano accompaniment as it were. However, if I try to include several or all of the four instruments, only one of them seems to work, the default piano sounding the other three. — What am I missing?

 

It seems to me there is some information from earlier compilation events sits as a residual when I attempt new compilation, after fiddling with the ly code, and of course it shouldn't.

 

Well, bug or feature? Or is this particular coder particularly stupid?

 

Regards, Torbjorn

 

 

 

T Högvall.vcf
Description: Vcard

Lipond_woodw_qua.ly
Description: Text Data