Jason Fraley interviews blues legend Taj Mahal, who performs with Keb Mo tomorrow at Wolf Trap in Vienna, Virginia. They discuss their “TajMo” collaborations, as well as Taj Mahal’s career from recording tunes like “Statesboro Blues” to movie soundtracks like “Sounder.” Did you know he’s related to the late Cicely Tyson? (Theme Music: Scott Buckley’s “Clarion”)