31-year-old blues guitarist Gary Clark Jr., lifelong Austinite and increasingly famous recording artist, has just spent a year and change in a deceptively small studio working on and off to finish “The Story of Sonny Boy Slim”, the follow-up to his Grammy-nominated 2012 studio album, Blak and Blu. Clark has made seven albums and few EPs, but this is only his second major-label studio full-length. Clark told Rolling Stones, “Frankly, I went in feeling very vulnerable.
