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The Clean Cut: Watch Jimmy Fallon, the Backstreet Boys perform 'I Want It That Way' with classroom i
Jimmy Fallon, the Backstreet Boys and The Roots perform "I Want It That Way" with classroom instruments. - photo by Jenna Alton
The Backstreet Boys, all-white outfits and Nick Carter on the tambourine make for a hilarious 90s flashback in a new video by The Tonight Show Starring Jimmy Fallon.

The Backstreet Boys teamed up with Jimmy Fallon and The Roots to perform the hit I Want It That Way with classroom instruments like the triangle, kazoo and apple shaker. Since the video was posted last Friday, it has been viewed 41 million times on Facebook and almost 2 million times on YouTube.

Last week, the Backstreet Boys also made headlines when they surprised unsuspecting fans with an impromptu concert in the elevator at MTV offices. The prank was recorded before the boy band appeared on the show "Total Request Live."