ASCAP
The American Society of Composers, Authors and Publishers is a performing rights organization which licenses and collects royalties for performance of its members' music. Contains a database of music in the repertory and information about membership and licensing. Includes articles about the music business. http://www.ascap.com/
American Composers Forum
Founded to join communities with composers and performers, encouraging making and playing new music. Includes history, news, datebook, membership information, and links. http://www.composersforum.org/