has quietly unveiled a Wikipedia-like music information site called SoundUnwound. The adjunct to its online commerce system allows fans to edit band profiles, album and song information and other music related news and updates.

All edits are first reviewed by Amazon staff before going live. Initial artist information is compiled from editorial reviews, Internet Movie Database and Musicbrainz content.

The site includes music recommendations of similar artists, links to YouTube videos, streaming song clips (which doesn't seem to be working at the moment) and links to buy digital tracks through the AmazonMP3 store.

SoundUnwound is in a beta stage at this time. No timeline is available for when the company expects a more formal launch.