Our goal is to create a virtual library containing all public domain music, as well as music from composers who are willing to share their work with the world without charge.
The Petrucci Music Library also encourages the exchange of musical ideas, both in the form of musical works and in their analysis. Feel free to post your analysis of a particular piece on the "discussion" pages, or join our forums for interactive discussion with the community.
I'm sure you already knew about them but if you didn't, their web address is www.imslp.org They will be your life saver when you can't get to the library!