GRAHAM STOOKEY HOMETOWN: Littleton, Colo. INFLUENCES: Lenny Kravitz, John Mayer, Stevie Ray Vaughan ALBUM: The Basement Tracks, out now WEBSITE: stookeymusic.com Graham Stookey took piano lessons as a child, but he truly found his calling when at age 13 he saw a show by acoustic guitar master Phil Keaggy. “After that I decided I wanted to play the guitar,” he remembers. “I enrolled in guitar lessons from an excellent teacher, and my journey...