After sharing the stage with his son Moses for his 10th birthday, Chris Martin has found even more middle school kids to jam with.

The Coldplay singer fronted a band of Crossroads School students during a charity concert benefiting pediatric cancer research yesterday (April 25). Together, they covered Prince’s “Raspberry Beret” and performed a rare live rendition of Coldplay’s song “Twisted Logic” from the band's 2005 album, X&Y.

The kids in Martin’s new band A-Side had never heard “Raspberry Beret” before he introduced them to it, but he says they learned to play it in about three hours.

Martin’s co-vocalist on the Prince cut was a young cancer survivor named Jaxon. Watch them pay tribute to Prince together below.