see also: art (for websites where people show off their own art), language
"a resource and a home on the internet for information and activities surrounding the memes of music, dance, art, altered states of consciousness"; largely rave culture
lots of articles exploring hypotheses on what music is and why it exists
"wiki for arts, media, and the humanities" with plenty of links to reference material
archive of avant-garde artifacts "filled with the detritus and ephemera of great artists better known for other things"