- Naxos Music Library
comprehensive collection of online classical music available on your computer or smart phone.
- Grove Music Online
major music encyclopedia/dictionary. Includes content from New Grove Dictionary of Music and Musicians, 2nd ed., New Grove Dictionary of Opera, and New Grove Dictionary of Jazz, 2nd ed.
- RILM Abstracts of Music Literature
comprehensive, ongoing guide to publications on music from all over the world, including journal articles, book chapters, conference proceedings, and dissertations. 1967-present.
- Music Index (online)
Index to music periodicals, popular & scholarly. 1972 to the present.