Klaxons + Baby Monster

Klaxons began life a few years back at the forefront of the so-called nu-rave scene, in which a handful of young English bands, inspired by American disco-punk acts, outfitted their bratty postpunk tantrums with the air-raid sirens and blissed-out synths of early-’90s techno. The London quartet comes to town with its second album, Surfing the Void.