∞ RIM's music service: $5 per month for 50 songs

AppleInsider:

BBM Music will arrive as a beta in the U.S., Canada and the U.K. in early September, before launching in the three regions later this fall. Subscribers won’t be able to export the music to PCs, but they will be able to transfer to the PlayBook tablet. The service will also reportedly contain a social aspect that will let subscribers share songs with other BBM Music subscribers.

The PlayBook of music services.