"At 31, he's probably the most acclaimed bluesman of his generation, a guitar hero of potent magnetism. Last year, he released "Gary Clark Jr. Live" (Warner Bros.), a double album that confirmed the obvious: He's at his best in the heat and clamor of performance. But despite the implications of the title, his new album has no concept, serving up a mixed menu of styles, including boom-bap swagger ("The Healing"), rustic gospel ("Church") and 1980s party-funk ("Can't Sleep"). At times it can feel as if he had set out to make a Lenny Kravitz record".