Branford Marsalis is the latest addition to Warren Haynes 18th annual Christmas Jam. In addition to Govt Mule, the annual benefit includes spots by Dave Matthews, The John Popper Project Featuring DJ Logic, Marty Stuart and his Fabulous Superlatives, New Orleans Social Club Featuring Henry Butler, Leo Nocentelli, Ivan Neville, George Porter & Raymond Weber, and Taj Mahal Trio, among others. The 18th Annual Christmas Jam will take place at North Carolinas The Asheville Civic Center on December 16.