Justin joined Fallon's house band, the Roots, in performing "Let the Groove Get In," a song off his upcoming album, The 20/20 Experience.
Unlike his slick "Suit and Tie" performance on "Saturday Night Live," and his dapper a Capella rendition of "SexyBack," JT looked much more chilled out this time around.
Check out Justin and the Roots in the video below!
Watch "Justin Timberlake: Let the Groove Get In" Video
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