Scores & Manuscripts Online
- ChoralWiki Choral Public Domain LibraryMore than 15,000 digitized pieces of vocal and choral sheet music in the public domain, plus texts, translations, and other useful information.
- BDPI Music Collection(Biblioteca Digital del Patrimonio Iberoamericano)
A portal which provides access through a single search to digitized materials from the national libraries of Brazil, Chile, Colombia, El Salvador, Panama, Portugal, and Spain. - IMSLP / Petrucci Music LibraryInternational Music Score Library Project - Petrucci Music Library A database of works in the public domain:
69,215 works · 243,974 scores · 24,637 recordings · 7,657 composers · 226 performers - The Library of Congress Performing Arts Encyclopedia: Music Treasures ConsortiumThe Music Treasures Consortium provides online access to the world's most valued music manuscripts and print materials, held at the most renowned music archives, in order to further research and scholarship.
- Mutopia Project: Free Sheet Music for EveryoneDigitized sheet music editions of Classical and Contemporary Music based on public domain editions. Includes some MIDI files.
Includes works by Bach, Beethoven, Chopin, Handel, and Mozart. As well as a number of modern editions, arrangements and new music where the respective editors, arrangers and composers have chosen to make the works freely available. - UCLA Sheet Music ConsortiumAn open collection of digitized sheet music drawn from collections around the world, including the Library of Congress and the National Library of Australia.
- Sibley Music Library Musical Scores(Eastman School of Music at the University of Rochester)
Contains more than 12,000 digitized manuscripts and scores in the public domain. Many of these are unique to the Sibley Music Library collection.
Also try the Dissertation and other collections - Musical Scores from Hathi TrustScores in the public domain are available for free when you check the "Full view only" box.
- Web Library of Seventeenth Century MusicThe Society for Seventeenth-Century Music presents new editions of seventeenth-century compositions that have remained unpublished or that are not available commercially.