Breaking up project into smaller files

[Jesse Engle]

Hello,

I'm trying to break up a project into smaller files. I have global
definitions in one file (global.ily), the main \score block in
main.ly, and each part of the score in separate files. When I had
everything in a single file, I had no issues compiling, but putting
the definitions in their own files has created a problem I can't
explain. Here is a link to program input and output:
http://www.pastie.org/2115133

Jesse