Outside of Heroes: Giants of Early Guitar Rock, Dion's past few albums, including the aptly titled Tank Full Of Blues, have been steeped in the American idiom. The singer's mid-'60s sides for Columbia represent some of the very best blues of that decade. But his relationship with the music has transformed with age. Where the Columbia material was brash and cocky, Tank Full of Blues is wise and knowing. The grooves don't explode; they smolder. Dion's voice no longer soars; it creeps along, close to the ground. But as "Two Train" proves, he can still pull a switchblade at any moment.