\include inside function

[Leo Correia de Verdier]

Dear list!

Is there a way to have an \include inside a function?
In the attached file includeinfunction.ly the commented out line doesn’t work 
(probably for some very logical reason, but still unknown to me). Is there a 
way to work around that and have includes inside functions?

(The function in this case is indeed meaningless, in my real use case the 
function will hopefully construct midi files from the variables in the included 
files combined in different ways)

Thanks a lot!

/Leo

includeinfunction.ly
Description: Binary data

includetest.ily
Description: Binary data