I know plenty of Beliebers lurk on these pages on the low, so this one is for you. Last night, Justin Bieber was the musical guest on The Tonight Show starring Jimmy Fallon. Bieber was on board to promote his soon to be #1 album, Purpose (already #1 on iTunes). Watch below as Bieber performs his single “Sorry” with a little help from The Roots. Purpose is in stores now. Below the clip, you can watch Justin, Black Thought, and Jimmy Fallon pair up with NASCAR Legends in the first annual Tonight Show 500 race in Rockefeller Plaza.