http://orpheus.ucsd.edu/webmaster/music.html
Michael Breen hasn't stopped at producing a solid promotional piece for his studio here. He's created the Harmony List with links to over 1200 (and growing) music-oriented resources. It is indexed by artists, classical, cultures, discographies, events, instruments, jazz, labels, lists, magazines, places, radio stations, research, resources, studios, and styles. Each of these areas are further broken down into subcategories and are very comprehensive. No flashy graphics here, but an excellent straightforward Web resource for music.