Taking a break from the Allman Brothers Band’s instant-classic sit-in-spectacular residency at the Beacon Theatre, slide-guitar virtuoso Derek Trucks and the Derek Trucks Band hit The Wellmont Theatre tomorrow (March 25th) to promote their sixth studio album, Already Free. Expect an eclectic mix of blues, soul, jazz, Southern rock, world music and a bunch of cool covers. But, mainly, just expect to have fun. Here, the Derek Trucks Band performs “Joyful Noise.”