The Porch Southern Fare & Juke Joint at River’s Edge welcomes back blues harmonica player Professor Harp, a k a Hugh Holmes, for two sets of live music indoors. The Professor was a rock ‘n’ roll drummer until 1969, when the Boston blues revival and a sterling performance by blues harmonica great George Allen “Harmonica” Smith combined to lure him away from drums and into a full- court press on the blues harp. Primarily playing a sparse yet full-sounding brand of no-nonsense, no-frills Texas-style blues, Professor Harp specializes in what he calls roots music. “It’s whatever makes me feel good and moves me, so to speak.” Dine in and social distancing required.