Begun in December 1998, CPDL is one of the world's largest free sheet music sites.You can use CPDL to find scores, texts, translations, and information about composers.

Welcome to Opera Karaoke, the site in which classical singers or aspiring ones can find at their disposal, ready to be downloaded, all the tools necessary to perfectly learn the most famous arias of the operatic repertoire.

A collaboration between the American Choral Directors Association and the Library of Congress. Contains public domain choral music that users can download, information on the composers, and material related to historical context and stylistic features.