Kvelertak crossbred two of Scandinavia’s wildest musical exports: garage rock revival and black metal. No surprise they wound up with a feral beast. The two genres come from similar emotional places, rebellious and ready to use rock’s power at its most primal. So here you have high-octane hybrids like “Fossegrim,” with its mix of Satyricon-style black ‘n’ roll and The Hellacopters’ street-fighting mania, and “Sultans of Satan”’s unholy spawn of Turbonegro and Darkthrone. Ivar Nickolaisen doesn’t have much in the way of vocal range but he makes up for it with sheer potency. Kinda like how Kvelertak doesn’t have much in the way of song variety but it makes you want to punch through drywall so who cares?