Classical
Classical Net, Concise History of Western Music, Dallas Symphony Orchestra for Kids, Discover ESO, From the Top, Los Angeles Chamber Orchestra - Kids Online, Music History Resources, New York Philharmonic KidZone, SoYouWanna Learn About Classical Music?
Early
Baroque On, Byzantine Chant, Early Music FAQ, Medieval Music Online, ORB: Introduction to Medieval Music
Jazz and Blues
125th Street: Apollo History, American Popular Music 1900 to 1950, Cascade Blues Association: BluesNotes, It's A Girl Thang, Jazz Kids, Jazz Roots, Miles Davis, This Week In Blues History, WNUR-FM's JazzWeb
Opera
Aida's Brothers and Sisters: Black Voices in , Aria Foundation, Da Ponte, Lorenzo, KidsOp Universe, OperaGlass, Ottawa Opera Boys Choir
Rock
History of Rock Music, Rock and Roll Never Forgets, Rock Bands, Rock Legends, The Dead Rock Stars Club, The History of Rock and Roll, The Rock 'n' Roll Zone
World Cultures
African Music Encyclopedia, BBC Radio 3: Africa on your street, Cariwave: Evolution of Afro Caribbean Music, Chandra and David's, China the Beautiful: Beijing Opera, Omaha Indian Music, The Mississippi: River of Song, Thomas Hampson: I Hear America Singing, Traditional World Music Recordings
History of Country Music
A chronological review of artists and songs from 1920 to 2000. Includes archive images, sound clips and movies.
Music Genre Sampler @ DataDragon
Learn about different musical genres including rock, Celtic, and classical. Includes information about artist and site links.