2015 has almost reached its midnight, and filthy, down-tuned rock n’ roll bands are sold in packs of six.  The last five years have been particularly fertile for all things loud, heavy, and based firmly in the blues, and the excitement that would once volleyball around a new act has started to wane and sag. The summer of sludge is over. It is heartening, then, when a group self-identifying as heavy fuzz rock come around to remind you that earth-shuddering grooves are not seasonal, but all-year round. TUSKS from Belfast are one such group. Robbing the swampy casket of the late…