Alexander Street Press
African American Music Reference - essays and images covering blues, jazz, spirituals, civil rights songs, slave songs, minstrelsy, rhythm and blues, gospel, and other forms of black American musical expression
Classical Music Reference Library - authoritative reference titles covering Western classical music: Baker's Dictionary of Music, Baker's Biographical Dictionary of Musicians, and Baker's Student Encyclopedia of Music
Classical Scores Library - classical music scores and manuscripts online
Garland Encyclopedia of World Music Online - essays, images, and audio covering music research of all the world’s peoples
Music Online - cross search African American Music Reference, Classical Music Library, Classical Music Reference Library, Garland Encyclopedia of World Music Online, and Classical Scores Library