Roan performed an 11-song set at the party, ending with a cover of “Don’t Let The Sun Go Down On Me” and her own “Pink Pony Club,” both with John. You can watch the footage here.

What better place to transform to a Pink Pony Club than Elton John's annual Oscars viewing party? On Sunday night, Chappell Roan took the stage for a full concert that included a historic duet with John of his classic "Don't Let the Sun Go Down on Me" and her hit "Pink Pony Club.

On Sunday evening, Sir Elton John held his annual Oscars after-party, where woman of the hour Chappell Roan was his musical guest. And it’s been revealed that during the party, Sir Elton and Chappell performed an impromptu duet of her signature hit Pink Pony Club.