Watch Meghan Trainor Deliver an Epic Performance of “I Want It That Way” with the Backstreet Boys

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The “All About That Bass” singer and all five original Backstreet members were in perfect harmony as they shuffled back and forth across the stage in unison. The crowd squealed and sang along as Trainor shared a steamy moment with each of the guys during the performance. Let’s just say she wasn’t the only one fanning herself as she locked eyes with Nick Carter.

Watch the full performance in all its boy-band glory here:

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The Backstreet Boys weren’t the only ones heaping on the nostalgia during the episode. The brothers of Hanson also took the stage with a gorgeous acoustic version of their mega-hit “MMMBop.” Surrounded by lights and a crowd of fans clapping along to the beat, the guys completely slayed their biggest hit in an intimate reboot of the ’90s classic.