INDIO, Calif., Oct. 17 (UPI) — Paul McCartney was joined by Rihanna onstage Saturday for a surprise performance of their 2015 single “FourFiveSeconds” during the second weekend on Desert Trip.

Rihanna, who was introduced by McCartney as “the queen of Barbados,” as reported by Billboard, notably arrived onstage rocking a baggy pin-stripped suit complete with sunglasses.

It was the first time the duo has come together to perform the hit single following the 2015 Grammy Awards alongside Kanye West who is also featured on the track.

“We finally found someone under the age of 50,” McCartney joked as Rihanna exited, poking fun at Desert Trip’s star-studded lineup of legendary musicians including the Rolling Stones, Bob Dylan, Neil Young and Roger Waters.

Young also accompanied McCartney during his Saturday set to perform duets of “A Day In The Life,” “Give Peace A Chance,” and “Why Don’t We Do It In The Road.”