From ehub:
Features artists, bands, songs, albums and a compilation of newsworthy events in the music world. Any music fan and site visitor may be the featured user. Visitors and regulars may edit the artists’ pages, give their own reviews and ratings on albums and tracks. URL: WikiMusicGuide.
If you’re a performing artist, it would make sense to get your listeners involved. First of all, it creates listener community. Second, it creates another place on the internet for potential fans to find you. Third, you gain feedback. You can even spy on your musical competition. 😉