King Princessbrought out a fellow New York City native rock star for her show at Radio City Music Hall.

King Princess, Julian Casablancas.

King Princess, Julian Casablancas

The pair duetted on the song’s next chorus, during which Casablancas walked behind King Princess — strumming the song on electric guitar — and covered her eyes. “You’re f—ing me up, bitch!” she playfully exclaimed.

After walking over to whisper something in Casablancas' ear, the rock star quipped, “Who the f— was that?”

“Julian Casablancas, bitch,” said King Princess with a laugh as he walked offstage.

Speaking toEntertainment Weeklyabout the track at the time, she revealed it was producer Mark Ronson who first suggested the idea. “Mark [Ronson] heard the demo and was like, ‘I really think there needs to be a live drummer.’ I agreed,” she said.

King Princess, Taylor Hawkins.Rachel Luna/WireImage; Richard Dobson/Newspix/Getty

King Princess, Taylor Hawkins

Though both knew they needed a drummer, when Ronson suggested Hawkins, she could barely believe it. “Oh, my God, do you think we can get Taylor?” she recalled asking Ronson. After one call with the “Uptown Funk” hitmaker, Hawkins agreed.

“So we FaceTimed. He was recording in L.A., I was in New York, and it was crazy. I was in my childhood home — my dad’s recording studio — listening to Taylor make my record better than I ever thought it could be,” the “1950” singer said to the outlet.

Elsewhere in the interview withEW, King Princess said, “[Hawkins] added something to that song that goes so beyond just laying down a drum track. He really showed me a level of musicianship and also respect and kindness that I will never forget.”

source: people.com