Actor Micheal J. Fox made a surprise appearance during Coldplay’s Glastonbury set to perform “Humankind” and “Fix You”.

Introducing the star, frontman Chris Martin described Fox as the “one who just totally rocks, with his Chuck Berry riff and the way he punched Biff… Ladies and gentleman, please welcome Michael J.Fox!”

“The main reason we’re in a band is because of Back to the Future,” Martin said following the performance. “So thank you to Michael, our hero.”