Shawn Mendes and The Roots help Jimmy sing his favorite tweets with the hashtag #FallSongs.
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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.
Hashtags: #FallSongs with Shawn Mendes http://www.youtube.com/fallontonight
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The Tonight Show Starring Jimmy Fallon is an American late-night talk show hosted by Jimmy...