Find scores and sheet music online:
- Music Online. Classical Scores Library
- IMSLP (International Music Score Library Project)
One of the largest repositories of online scores - Sibley Music Library Musical Scores
- Classical String Quartets at Duke University
- Cambini Quintets at the Library of Congress
- WLSCM (Web Library of Seventeenth-Century Music)
- New York Philharmonic Leon Levy Digital Archives
- Contemporary Music Score Collection (UCLA Music Library)
- Choral Public Domain Library
- DIAMM (Digital Image Archive of Medieval Music)
- Measuring Polyphony: Digital Encodings of Late Medieval Music
- Archive of Seventeenth-Century Italian Madrigals and Arias (ASCIMA)
- Mutopia Project
- Indiana University Variations Online Musical Scores
- Music Treasures Consortium at the Library of Congress
- Pre-1700 Musical Treasures at the Library of Congress
- Moldenhauer Archives
- American Choral Music at the Library of Congress
- Morgan Library & Museum Music Manuscripts Online
- Gallica (Bibliothèque nationale de France)
- Opera & Ballet Primary Sources
- British Library Online Gallery
- Danish Royal Library Digital Music Archive
- University of North Texas Virtual Music Rare Book Room
- Chopin Early Editions
- Felix Mendelssohn at the Library of Congress
- Marenzio Online Digital Edition (MODE)
- Tasso in Music Project
- Schubert Online
- Schumann Autographs
- New Mozart Digital Edition
- Aaron Copland Collection at the Library of Congress
- Elliott Carter Collection at the Library of Congress
- Ernest Bloch Collection at the Library of Congress
- Samuel Barber at the Library of Congress
- The Austen Family Music Books
- Silent Film Sound & Music Archive
- Historic American Sheet Music
- African-American Band Music & Recordings at the Library of Congress
- African American Sheet Music at Brown University
- Sheet Music Consortium
- 19th-Century American Sheet Music
- Sounding Spirit Digital Library
