Music
FreeplayMusic - http://freeplaymusic.com/
Offers free network synchronization to all BMI/ASCAP and SESAC, national network content broadcasts in exchange for music cue sheet compliance.
Music Ontology Specification - http://musicontology.com/
Provides main concepts and properties for describing music.
Music.com - http://www.music.com/
Offers music videos, official lyrics, personal playlists, celebrity photos and news.
Musiqtone.com - http://www.musiqtone.com/
An online music news and media outlet covering the mainstream, indie and the underground. Check out interviews with various bands and solo acts, get opinions on concerts and albums, and connect with fellow music fans.