Warren Haynes [ tickets ]' annual Christmas Jam, which this year has been expanded to two nights, will feature The Allman Brothers Band [ tickets ], The Del McCoury Band [ tickets ], Gov't Mule [ tickets ], Michael Franti [ tickets ], Joan Osborne [ tickets ], Travis Tritt [ tickets ], Marty Stuart [ tickets ] and Johnny Winter [ tickets ], among others.

The 20th anniversary event, which will be held Dec. 12-13 at the Asheville Civic Center in Asheville, NC, will for the second year feature daytime concerts, an art show and movie screenings. This year's event also will include a comedy show featuring Lewis Black.