RIM has announced it is to partner with London-based digital music provider 7digital to power music downloads on its new BlackBerry Playbook tablet, expected to launch within the coming weeks.

7digital’s Music Store will come pre-installed on the BlackBerry PlayBook at launch, starting in North America and rolling out to other regions later this year. The move demonstrates RIM’s commitment to providing its users with a dedicated music service, providing competition to iTunes in the process.

7digital is well established in the digital music market, it provides the underlying technology to power Spotify’s buy-to-own tracks, and currently offers 13 million high-quality (320kbps) MP3 downloads to its customers, the largest “international footprint of any MP3 digital music seller”.

Those who are wanting to get a sneak peak of the 7digital Music Store application will be able to see it previewed at SXSW this week, with a full launch expected in April.