Log Message:
py-music21: add new package

music21 is a set of tools for helping scholars and other active listeners
answer questions about music quickly and simply. If you've ever asked yourself
a question like, "I wonder how often Bach does that" or "I wish I \ 
knew which
band was the first to use these chords in this order," or "I'll bet \ 
we'd know
more about Renaissance counterpoint (or Indian ragas or post-tonal pitch
structures or the form of minuets) if I could write a program to automatically
write more of them," then music21 can help you with your work.