On their pummeling debut Indoctrine, extreme metal "supergroup" Blood Revolt sound like two different bands spliced or mashed together: We're talking proud Celtic-metal epics and murky "chaotic black war" riots (with names like "Salvation At The Barrel Of A Gun"). More specifically, A.A. Nemtheanga from fist-pumping Irish crew Primordial bellows those powerful soaring Metal Blade-approved vocals over a bed of ...