As badly kept secrets go, this takes the cake. By the early evening, the tiny upstairs room of this shabby Shoreditch boozer is already heaving, and there's a queue of about twice as many people again snaking vainly down the street outside too. The word-of-mouth love for this Brooklyn outfit's new album, Let's Stay Friends, is enough to make this show something of an event. And quite right, too: it is one of the most fun and inventive rock records in a long time, every second of it filled with colour, spirit and creativity.

And that is before you even factor in extraordinary frontman Tim Harrington. A great big bear of a guy with not much hair on his head but untamed acres of it on his face, he first appears tonight apparently dressed as some kind of viking druid, in a huge hessian cowl scrawled with arcane symbols. And the second the band career into their joyous, art-party punk, he's off, and over the next 45 minutes will be seen singing from or jumping off every rafter, speaker stack and windowsill in the room. He even does one song, with the aid of a very long microphone lead, from the downstairs bar.

If, at times, his exuberance leads to sacrificing a little musical discipline - some of the songs lose a little of their recorded meticulousness - the ideas shine through nevertheless. The songs are peppered with leftfield flourishes, but still entirely accessible; guitarist Seth Jabour's spiralling lines and constantly surprising melodic gear-changes put him in art rock's top league, and the addition of a fifth member for this tour rounds out their sound beautifully.

Take your eyes off the stage for a second and suddenly Harrington will appear atop someone's shoulders two feet away from your face, now half-naked and howling out another ingenious chorus, looking around for what to climb up next. You can't keep fun like this a secret for long.

· At the Scala, London on Monday. Box office: 020-7833 2022.