Free Sheet Music for Choirs and Orchestras Via the Internet

Anyone who has played in an orchestra or ensemble or sung in a chorus is probably aware of the cost of sheet music, even though much of it hearkens back to pre-20th century and has long since passed out of copyright. Thanks to the Internet and the idea of the wiki, however, such sheet music can be had for free from sites such as the International Music Score Library Project (IMSLP) and the Choral Public Domain Library (CPDL).

What is the difference to your pocketbook? Take a choir of 50 who intend to sing Pablo Casals' still-under-copyright piece O Vos Omnes. To buy enough copies of the choral arrangement could cost around $150.