- All About Jazz
- American Music Resource (AMR) -- reference information about all styles of music indigenous to the Western Hemisphere
- Aria Database
- BMG Classics: RCA Red Seal and Victor
- Carnegie Hall
- Center for Black Music Research
- The Choral Public Domain Library (CPDL)
- ClassicalNet
- CultureFinder
- DW3: Classical Music Resources -- music pathfinder from Duke University Libraries
- Essentials of Music - glossary and other information
- FolkMusic.org
- ftm Music, Inc.: Music Publishing
- Gaylord Music Library Necrology -- birth/death dates for composers and other musical artists
- Historic American Sheet Music -- at Duke University.
- IFCM: Choralnet -- directory to choral music
- IUMA: Internet Underground Music Archive -- forum for independent artists
- Library of Congress: Performing Arts Reading Room: Internet Resources for Music, Theater, and Dance
- London Symphony Orchestra
- Metropolitan Opera, NYC
- The Mozart Project
- The Mudcat Cafe and Digital Traditions Database
- Music History 102: A Guide to Western Composers and Their Music from the Middle Ages to the Present
- Music Schools
- Musicals101.com: The History of Musical Theatre and Film
- New York Philharmonic Orchestra
- The Red Hot Jazz Archive
- Royal Opera House, London
- Sonances -- journal of twentieth century music
- The Symphony: An Interactive Guide -- timelines, histories, and audio clips
- Women in Music: Duke Libraries
- Worldwide Internet Music Resources
- WWW Virtual Library: Classical Music
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