Shawn Mendes joins Jimmy and The Roots to perform his hit "Treat You Better" with classroom instruments. See the full instrument list below: Shawn Mendes - Vocals, Spoons Jimmy Fallon - Vocals, Bass Drum, Casio Keyboard, Wood Block Questlove - Hand clappers, Lemon Shaker Kamal Gray - Xylophone James Poyser - Melodica Captain Kirk - Ukulele Tuba Gooding Jr. - Kazoo, Apple Shaker Mark Kelley - Kazoo Stro - Bongos Black Thought - Tambourine 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, Shawn Mendes & The Roots Sing "Treat You Better" (Classroom Instruments) #FallonTonight #ShawnMendes #JimmyFallon

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