Generating music from a list of identifiers

[Trevor Daniels]

Hi Schemers

I'm struggling to find how to do the following:

I have a list of the identifiers of variables which contain either music or #f 
and I'd like to generate the parallel music of all of them which contain music. 
 I can do this by listing the identifiers explicitly, like this:

AllMusic = <<
  #(if DescantMusic DescantMusic)
  #(if SopranoMusic SopranoMusic)
  ...
  #(if PianoLHMusic PianoLHMusic)
>>

But I'd like to do the same thing without listing each one explicitly, using a 
list like this, which is generated algorithmically:

#(define AllMusicNames
   (list
     "DescantMusic"
     "SopranoMusic"
     ...
     "PianoLHMusic"))

TIA
Trevor