Zac Brown Band with Gregg Allman and John Mayer, "Melissa"
Hailing from nearby Macon, Georgia, the Allman Brothers Band are an inevitable cornerstone in the music of Zac Brown Band. The Atlanta natives were lucky enough to share the stage with Gregg Allman on several occasions, including a cover of "Whipping Post" with Vince Gill, but if any song were tailor-made for Brown it's "Melissa." Allman and ZBB teamed up to perform the ballad at the Nashville installment of Brown's Southern Ground Music and Food Festival in 2012, where the understudies didn't so much make it their own, as inhabit its gentle beauty in harmony with their hero. Even guest John Mayer's guitar solo was tasteful and reverent.