I'm not sure what a "partition" is. If you're talking about tablatures, music scores, sheet music, or transcriptions, I don't know if either limewire or audiogalaxy has what you want, but you never know. I assume audio galaxy just does MP3's?

Your best bet is www.google.com searching for one of the terms I mentioned.

Free sheet music may be hard to find, but it's not amazingly expensive:

http://www.printmusiconline.com/Shop...fm?itm_id=1268

http://www.sheetmusicplus.com/a/phra...=Chick%20Corea