17/10/2016 2:17 AM AEDT | Updated 17/10/2016 2:18 AM AEDT

Rihanna Surprises Crowd At Desert Trip To Perform With Paul McCartney

MJ Kim/MPL Communications Ltd via Getty Images
Paul McCartney and Rihanna at Desert Trip music festival, Oct. 15, 2016. 

Paul McCartney surprised the crowd at Desert Trip music festival in Indio, California, on Saturday when he brought Rihanna onstage to perform their hit “FourFiveSeconds.” 

The duet marked the first time the Beatle and “Bad Girl” performed the song (which was co-written by Kanye West) together since the 2015 Grammy Awards. Naturally, they killed it. 

As RiRi left the stage, McCartney couldn’t help but joke about her age, considering the festival’s main demographic ― it was dubbed “Oldchella” due to its lineup of classic rock acts such as McCartney, Neil Young, The Who, The Rolling Stones, Roger Waters and Bob Dylan. 

“We finally found someone under the age of 50,” he said. 

Last week, McCartney was joined onstage by Young. Those two also gave the crowd a repeat of that performance this weekend, playing Beatles hits “A Day in the Life” and “Why Don’t We Do It in the Road?” as well as John Lennon’s “Give Peace a Chance.”