They're primarily breakbeat with rock and rap influences; they're not as aggressive as, say, The Prodigy, but not as funky and R&B-influenced as Fatboy Slim. They were pretty huge during the 90s, and one of their albums (either Tweekend or Legion of Boom) has had every single track from it licensed in some way, something extremely rare. However, once they started realizing pretty much anything they churned out would end up netting them royalties from an action movie trailer or Nike commercial, they became heavily formulaic and reliant on their existing sound; case in point, almost everything on Legion of Boom sounds like a 5-minute loop of a 30-second trailer soundtrack. Their new album, Divided by Night, is a total 180 flip, focusing way less on heavy beats and rock guitars and having a darker, more cerebral production. It's way different from their earlier stuff, and in a few cases, a little too un-heavy to support some parts of the songs. All in all, though, it's a great album.