Gretchen Wilson and Old Crow Medicine Show have been added to the list of performers at Marty Stuart's seventh annual Late Night Jam scheduled for June 4, 2008 to coincide with the CMA Music Festival in Nashville. The concert at the Ryman Auditorium benefits the Recording Academy MusiCares program (which provides assistance to those in the music industry during times of need) and the Country Music Association's Keep the Music Playing program (promoting music in public schools). As previously announced, Stuart and his band, the Fabulous Superlatives, will be joined at the Late Night Jam by Charlie Daniels, John Rich (Big & Rich), Kathy Mattea, Sunny Sweeney, the SteelDrivers and Mike Farris.