The British pop star's set included a Backstreet Boys cover.
As wide-ranging as the Bonnaroo lineup is -- from Golden Age hip-hop to dubstep -- dance-pop artists are, nevertheless, in short supply. In fact, Charli XCX, who played The Other Tent at Bonnaroo Friday afternoon, might be the only one. Naturally, a Backstreet Boys cover was in order. For more on Charli XCX check out her Headphone Highlights episode on RBMA Radio and our H∆SHTAG$ web series.