How to find primary sources
Music & recordings
Garland encyclopedia of world music online (includes audio examples, illustrations, photographs, maps, drawings, and more)
Music Online: Classical Scores Library (contains classical scores, manuscripts, and previously unpublished material)
Naxos Music Library (provides a comprehensive collection of classical music)
Smithsonian Global Sound for Libraries (includes the published recordings owned by the non-profit Smithsonian Folkways Recordings label and the archival audio collections of various labels)
See also the Finding music, sounds and images guide.