Gary Clark Jr. Live (2 Lp's)Texas guitar ace Gary Clark, Jr., who at his best sounds like nothing so much as the past and the future of the blues, has been compared to guitar icons like Jimi Hendrix and Stevie Ray Vaughan. His playing is a powerful and inspired mix of blues roots with some contemporary soul and hip hop touches, but it remains the blues always, and the blues is perhaps even more central to his sound than it was for either Hendrix or Vaughan. Clark's major label