Known since the late '70s for their downtempo approach to blues, gumbo-ing porch-swing harmonies and pocket drumming, the Holmes Brothers can pull off everything from a church hall to a street festival (Joan Osborne even hired them as her backing band for a tour with Bob Dylan). Their latest Alligator Release stays true to their roots (2010), earning them a top spot on the Billboard blues chart. Three veteran sidemen, led by Old Town teacher, Harlan Terson, open. (Gavin Paul)