Virginia Creep’s name is not just an ode to the band’s shared home, but also a good indicator of what to expect from its music: Southern-tinged rock with a predilection toward sludge-metal, willing to get into a groove and stay there. That’s a bit of a departure for the band’s vocalist J.R. Hayes, who has been the singer of the artful, progressive grindcore act Pig Destroyer for nearly two decades. On “Vortex,” which The A.V. Club is premiering below, Hayes is found singing instead of screaming, bearing little resemblance to the howling demon at the front of Pig Destroyer.