The IMSLP app allows you to search the award-winning International Music Score Library Project (IMSLP) or the Petrucci Music Library, the world's largest free online sheet music library. Additionally, it enables you to build your own collection of scores and recordings.

IMSLP is of the belief that everyone should have easy access to music. IMSLP was established to make music scores available for no cost to anyone with internet access. The IMSLP's ultimate goal is to compile all music scores that are in the public domain as well as music scores from all living composers or their estates who want to make them freely available to the public.