Modern Mississippi music. If one asks Luther Dickinson to define what the North Mississippi Allstars (NMA) create, that’s the answer they’ll get from the singer/songwriter/multi-instrumentalist. But growing up in Mississippi, we were surrounded by so many traditional families that played hardcore blues. With a dozen records recorded under the NMA banner, Dickinson has plenty of musical options for his concert set lists. North Mississippi Allstars performs at 8pm, Thursday, Aug. 20, at the Sweetwater Music Hall, 19 Corte Madera Ave., Mill Valley.