BlackBerry BBM music video
The concept is simple, yet actually rather brilliant. Your $4.99 allows you access to 50 tracks a month from millions of tracks offered up by all four major music labels. You can then change up to 25 tracks every month. All your BBM friends who subscribes to BBM Music then shares their 50 tracks with you, giving you potentially thousands of tracks depending on just how popular you are. Essentially, the more friends you have, the more music you can listen to.