In addition to keyword searching, users can browse the collection by work, composer, time period, nationality and instrumentation.

The largest repository of free and freely available recordings on the web, the International Music Score Library Project (IMSLP) is guided by the philosophy that 'music should be something that is easily accessible for everyone.' The IMSLP has two primary goals: to gather all public domain music scores (including contemporary composers who wish to release them to the public free of charge), and to facilitate the exchange of musical ideas outside of compositions. PDF versions of individual scores can be downloaded and printed, and many works are accompanied by MP3 or MIDI recordings.of musical works, and in the analysis of existing ones. IMSLP also encourages the exchange of musical ideas, both in the form of musical works, and in the analysis of existing ones.

IMSLP attempts to create a virtual library containing all public domain musical scores, as well as scores from composers who are willing to share their music with the world without charge.

Petrucci music library free