You Can't Really Complain At Free Features.

Thus you'll be delighted to hear that Sony and Studio London have a new free update in the pipeline for you: Online Battle Mode. Here you'll be able to send invites to your friends and challenge them to a song performance. Both players will need to own the song in question, but if you do you'll even be able to stream your performance over the Playstation Eye.

If you're European and what to beta test, you can do so through here.