Research In Motion (RIM) today rolled out BBM Music, a cloud-based music service with a social bent. RIM touts a growing music library with millions of songs from partnerships with EMI, Warner Music Group, Universal Music Group and Sony Music Entertainment.

“More than 45 million customers already love the social communication benefits delivered through BBM and we are thrilled to be extending the experience into a uniquely social and interactive music service,” said Mike Lazaridis, RIM president and co-CEO, in a statement.

Users of the service will be able to build profiles with up to 50 songs, invite friends to BBM Music from their BBM contacts, share playlists or single songs with BBM Music friends and cache music for offline listening.

A closed beta trial of the BBM Music service is starting today in Canada, the United States and the UK. The BBM Music service is expected to be commercially available to customers later this year for a monthly subscription of $4.99 in Australia, Canada, Columbia, France, Germany, Indonesia, Italy, Malaysia, Mexico, Netherlands, Saudi Arabia, Singapore, Spain, Thailand, Turkey, UAE, the United Kingdom and the United States.

RIM said pricing may vary by country and will be announced upon availability in each country.