They never even bother to stop when they've crashed into something. They don't leap into new worlds so much as master the old ones, turning Slim Harpo's blues obscurity "Hip Shake" into a harp-and-piano steamroller and setting spines a-cracking in "Ventilator Blues." Both "Tumbling Dice" and Keith Richards's "Happy" have become hits, but the 1972 album is most notable for its overall murky adrenaline. --Steve Knopper