DeweyMusic is a new interface for Archive.org's wonderful public domain music library. You can listen to, download, remix, and share anything you see on this site legally and for free.

The Petrucci Music Library is an internet-based collaborative music score library, and is currently the main project. You will find tens of thousands of scores composed by thousands of composers here, all available for free download.

Project Gutenberg volunteers have been engaging in digitizing public domain sheet music, using a variety of techniques, to enable study and performance. For the most part, the musical pieces created have been chamber music, with composers such as Brahms a

A search engine for copyright free music loops.