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.

Chappell Roan sang at Elton John's Oscars AIDS benefit, singing 'Your Song' and dueting on 'Don't Let the Sun Go Down on Me' and 'Pink Pony Club.'

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.