It was easy to be cynical when Foster the People broke through with “Pumped Up Kicks”. Frontman/mastermind Mark Foster had, in fact, been working as a jingle writer for a while, so connecting the dots between soulless commercialism and the almost too-perfect indie pop wasn’t challenging. Foster himself didn’t shy away from that link: “I definitely learned from the commercial standpoint what works,” he told Rolling Stone in June 2011. That hook could easily be called contagious, even weaponized, designed in a lab to overpower the pop universe. And it did.