In a moving tribute to fallen drummer/singer Levon Helm, Zac Brown and Nashville producer T Bone Burnett joined Elton John and Mavis Staples to perform his best-known song, the Band's classic 'The Weight.'
Zac Brown and Mumford & Sons are part of a star-studded group of musicians set to pay tribute to Levon Helm at the 2013 Grammys ceremony this weekend.