“Chelsea Wolfe followed up 2011's tar-black guitar-driven breakthrough Apokalypsis with last year's haunting collection of acoustic missives, Unknown Rooms. On both releases, Wolfe showcased her chilly, November howl, a sensually breathy voice that's blunted with cold edges and almost ethereally fragile. On “The Warden”, the first single from her new album Pain is Beauty (out September 3 via Sargen”