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With The 20/20 Experience – 2 of 2 already No. 1 on iTunes, Justin Timberlake kicked off his album release week with an appearance on “Ellen.” The pop superstar, who was feeling under the weather, sat down to discuss his reunion with *NSYNC at the VMAs and his wife Jessica Biel.

He also killed the stage with an electrifying performance of his new single “TKO” and an acoustic version of “What Goes Around… Comes Around.”

JT will embark on “The 20/20 Experience World Tour” on Oct. 31 in Montreal and has announced dates for his European tour, beginning March 30 in the U.K.

Watch his knock-out performance below.