Although electroclash has encouraged a certain segment of the concertgoing population to shake its booties, there has to be an option for people who don't necessarily want to get gussied up like crack-whore versions of Cyndi Lauper and bump rumps to distorted synth beats. Washington, D.C.'s Q and Not U is the rockin' dancer's savior. Like its labelmate Fugazi, Q and Not U views guitars as weapons, noisemakers and choreography prompters. However, this outfit trades outwardly aggressive aural assaults for smooth, stripped-down grooves. At its most recent regional appearance (at the Pink House in Lawrence), the intimate, packed-party setting somehow enhanced its gracefully jagged sounds.