CPN Hollywell has a voice like a cat’s tongue, raspy but soft, with the rough-edged blues-i-ness of Greg Cartwright, the anthemic rock burr of Royal Headache’s Shogun Wall, the frenetic garage-roots energies of Thee Retail Simps. His band, out of New Orleans, plays a cracked, county-tinged punk rock, crusted in fuzz and zinging with frantic slides.