The Revolve Film & Music Festival gets underway tonight in Winston-Salem, continuing through the weekend with a cool schedule of independent films. For our purposes, the festival's main event happens Friday -- a show at the Werehouse in Winston-Salem featuring recently regrouped '80s-vintage new-wave band Pylon. But I'm more interested in opening act Gravel Truck, a Let's Active tribute band (named after a song on Let's Active's 1984 magnum opus "Cypress"). Since Gravel Truck consists of Let's Active main man Mitch Easter "and friends," and since Easter went many years without playing Let's Active songs at all, this one is highly recommended for North Carolina music history buffs.