Avvenu Music for Facebook lets users explore, profile and share their musical interests.

The service places stickers in users profiles based on users favorite artists, music styles and musical eras. User’s can share stickers with friends, customize a "sticker wall," and comment on each other’s stickers and collections.

Stickers are based on an unpublished rules system, which takes into account a number of factors when determining to award an individual stickers. More than 50 stickers are available including music categories such as "Unorthodox", "Metal Head" and "I Love the 80′s." New stickers and social music features will be added to the service on a regular basis.

"Avvenu Music for Facebook will evolve into a deeply social music experience unlike anything that exists today," said Richard French, CEO of Avvenu.

"The Facebook Platform provides a unique opportunity to deliver compelling social applications to millions of people, and combined with Avvenu’s own patented technology, will yield innovative digital media experiences."

Avvenu Music for Facebook is a free service and does not require software to be installed or an Avvenu account.