boston — peace of mind: what is so perversely appealing about this? summer and joy pervade the helium harmonies, the meticulously-crafted and sports-car-sleek just-enough tough-pop guitar riffs, and the snappily driving beat. nearly as bluesless, more coolly efficient, and a lot more fun than kraftwerk. the precursor to “never let you go” indeed. for four minutes, aor is justified.