Zac Brown, Sheryl Crow, Vince Gill and Emmylou Harris will perform together at an All for the Hall fundraising concert for the Country Music Hall of Fame and Museum on Sept. 13 in Los Angeles. The musicians will follow the "guitar pull" format -- sharing the stage and taking turns with songs and stories. Held at Club Nokia, seating options are 10 for $10,000, five for $5,000 or single seats for $1,000. Gill and Harris are both members of the Country Music Hall of Fame.