While the pairing may appear unexpected on paper, both artists have built careers by looking beyond traditional boundaries. Since its formation as an Allman Brothers Band side project in 1994, Gov't Mule has folded blues, soul, funk, jazz, and reggae influences into its Southern rock foundation, while Marley—the eldest son of Bob and Rita Marley,—has spent more than two decades expanding reggae's reach far beyond its roots.—J.C. Roddy/Cigar City Sounds