U2's collaboration with famed producer Brian Eno has resulted in a new "trance" inspired album unlike anything they've done before. The Irish rockers have spent the last few months recording the follow-up to 2004's How To Dismantle An Atomic Bomb in an African recording studio and frontman Bono believes fans will be shocked by the results. The 47-year-old says, "Normally when you play a U2 tune, it clears the dancefloor. And that may not be true of this. There's some trance influences. But there's some very hardcore guitar coming out of The Edge. Real molten metal. "It's not like anything we've ever done before, and we don't think it sounds like anything anyone else has done either."