Well, it was sort of leaked a couple of weeks ago (nice one, spraynwipe!), but it's now been officially confirmed - brand fusion has occurred again, this time with LEGO meeting Rock Band:

Players will become rockers as they embark on a journey to stardom that the whole family can enjoy as they work their way through local venues, stadiums and fantasy locations on Earth and beyond that mimic the imaginative settings that the LEGO world offers. Also continuing the LEGO “build-and-play” gaming experience, players will be able to create their own LEGO Rock Band style as they customize their minifigure avatars, band and entourage, including roadies, managers and crew. LEGO Rock Band supports Rock Band instruments, as well as other music game controllers.

The press release has some more information, including a couple of the included songs (notably, Europe - The Final Countdown... COME ON!).

More information and some screenshots are available on our LEGO Rock Band game page.

final countdown?! it comes with synthesisers?

Better be a lego Gob on stage performing tricks... sorry... illusions while you play Final Countdown.

I played Saints Row 2 recently, didn't really like the game at all, but the best part of it was it had an 80's radio station that played The Final Countdown.

I love how you changed the picture to a lego dude with a guitar!

That's actually a screenshot from the game.

gay

totally

Final Countdown definately sounds like the best part of this game.

i feel like singing along allready..

the finaalll countdown dun dun dun nun

Best use of the Final Countdown song ever was in Arrested Development. I'd imagine it's only a matter of time before there's a Lego Sims game announced. Do EA own the rights to the Sims games still now that Will Wright parted ways from them?