Seven years after his last visit to the Festival, famed New Orleans singer-pianist Mac Rebennack, alias Dr. John, returns with his latest album, Locked Down ? one of the finest releases of 2012, according to Rolling Stone — administering a potent dose of his incredible R&B-blues-rock-funk medicine. The good doctor will share the marquee with another living legend, singer and multi-instrumentalist Leon Russell, who played alongside the greatest greats (Cocker, Clapton, Dylan…) and soared to success as a solo artist with his amalgam of blues and southern rock during the ’70s. It’s nothing less than a dream date for fans of the genre!