Thanks at least in part to Sunn O))) the close parenthesis has come to typographically symbolize, to visualize, the sound of a deep, rumbling, eschatological drone. Daniel Lechner and Robert Axthammer know this well, which is why their doom drone duo act is called not simply Deep but .(((DEEP))). “Breath,” the third track on the pair’s SoundCloud page, is 15 minutes of intensely quavering doom drones, layered for much of the middle third with the sort of broken-glottal vocalese associated with orc mating rituals and the blackest of black metal. It’s an impressive feat. The orcs return later, but only after a short glimpse of the ethereal, thanks to a more angelic if still deeply subsumed choral part. This is dense stuff. It also has an impressively extended fade, not just the drone volume being pitched down, but amid that toxic denouement new fears arise, crackling and churning. Turn off the lights, play it loud, and let it seep into the carpet and into your skin.