The classic 70s rock stylings of pianist frontman Walston and friends recently earned them a coveted slot on David Letterman's Late Show . On the evidence of their third album, it isn't obvious why. There's no fresh spin on the hoary old Led Zep-isms of Sweat Shock and recent single Heavy Bells, while more ponderous material fails to distinguish them from a competent bar band. They're noticeably better when Walston dispenses with his growl and the arrangements are less frenetic, as on Nobody Knows, which recalls the 1970s power-pop of Badfinger. Still, it's hard to see this making as much impact this side of the Atlantic.