Backstreet Boys join Jimmy and The Roots to perform their hit "I Want It That Way" with classroom instruments. See the full instrument list below: Brian Littrell - Vocals, Apple Shaker, Wood Block Nick Carter - Vocals, Tambourine Kevin Richardson - Vocals, G├╝iro AJ McLean - Vocals, Maraca Howie Dorough - Vocals, Coconuts Jimmy Fallon - Vocals, Bass Drum, Casio Keyboard, Apple Shaker Questlove - Hand clappers Kamal Gray - Xylophone James Poyser - Melodica Captain Kirk - Ukulele Tuba Gooding Jr. - Kazoo, Apple Shaker Mark Kelley - Kazoo Stro - Bongos Black Thought - Triangle Subscribe NOW to The Tonight Show Starring Jimmy Fallon: Watch The Tonight Show Starring Jimmy Fallon Weeknights 11:35/10:35c Get more Jimmy Fallon: Follow Jimmy: Like Jimmy: Get more The Tonight Show Starring Jimmy Fallon: Follow The Tonight Show: Like The Tonight Show: The Tonight Show Tumblr: Get more NBC: NBC YouTube: Like NBC: Follow NBC: NBC Tumblr: NBC Google+: The Tonight Show Starring Jimmy Fallon features hilarious highlights from the show including: comedy sketches, music parodies, celebrity interviews, ridiculous games, and, of course, Jimmy's Thank You Notes and hashtags! You'll also find behind the scenes videos and other great web exclusives. Jimmy Fallon, Backstreet Boys & The Roots Sing "I Want It That Way" (Classroom Instruments)

The Tonight ShowJimmy FallonBackstreet BoysThe RootsSingI Want It That WayClassroom InstrumentssnlFallon Stand-upFallon monologuefunny videointerviewvarietycomedy sketchestalentvideocliphighlightMillenniumboy bandBlack & BlueBackstreet's Backpopbackstreet boysi want it that wayjimmy fallonaj mcleannick carterbrian littrellkevin richardsondrop the mic