The Country Music Association has pledged $10 million to the fundraising campaign that will significantly expand the Country Music Hall of Fame and Museum in downtown Nashville. The donation is the largest in the Hall of Fame's history. The Museum's expansion will include the state-of-the-art CMA Theater, which will feature a 500-seat main floor and two balconies of 150 seats each. The theater's back-of-house will include a green room, band room and four dressing rooms. The museum's expansion from 140,000 square feet to 350,000 square feet is scheduled to be completed in 2014.