Swedish House Mafia are not the first DJs to think they're rock stars; they're not the first to do anything, really. But the alliance of Axwell, Steve Angello and Sebastian Ingrosso embrace that image more than most. They eschew both subtlety and shame in their determination to convince the world theirs is the craziest party ever – their idea of a twist is to chuck such underplayed obscurities as You Got the Love or Satisfaction into the mix. Their own music pounds ceaselessly behind it all, consisting mostly of shrill, over-compressed blasts of sound and blocky beats. Scales are climbed repeatedly but the melodies fail to take the listener higher. An appearance by David Guetta reminds us that it could be much worse, and an excursion into klezmer techno on Valodja briefly threatens to be interesting; but in the main, Swedish House Mafia reduce hedonism to pure function, a facsimile of ecstasy that winds up grim, joyless and oddly sexless.