Informative music site. Describes different instruments and has sound files to accompany them. It also explains different musical genres, teaches how to read music, and more.
Classical Net
Good resource site for composers, their works and biographies. Also has articles and a good section about classical music appreciation.
Resources for Music Educators K-12
Categories include compositions by students; sites for band teachers, orchestra teachers, vocal and choral teachers, and classroom music teachers; and general sites of interest to all music educators.
Music Education Online
K-12 music teachers will find a compilation of useful information organized into areas of interest, such as general music, vocal music, instrumental music, etc.
Sapphire Swan Dance Directory
Great dance links page. Every kind of dance imaginable is represented here.