Few young rock groups are as purely, raucously fun as White Reaper. Since their 2014 self-titled debut, the Louisville four-piece have sought to preserve what they see as rock music’s most thrilling sonic elements: big hooks, bigger riffs, raw power. Like their fellow ascendant garage-punks Sheer Mag and Diarrhea Planet, White Reaper always sound like they’re having a sticky-fingered, beer-gulping good time. Their brand new LP, The World’s Best American Band, which zips by in 31 consistently effective minutes, is exponentially more swaggering than their previous records. And though White Reaper usually get the job done through sheer force and volume, sometimes they find a concise, interlocking instrumental balance too, as on album highlight “Eagle Beach.” No Parents open.