“On Savage Gold, the remarkable third album from the Brooklyn quartet Tombs, what’s most astonishing isn’t the sharpness of the riffs or the power of the drums, the allure of the imprecations or even the momentum of the mix. Rather, it’s how well Tombs makes an ever-shifting mix of post-punk and black metal, death metal and simple stomping rock feel singular and uniform, as though there were nothin”