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The U.K.’s Glastonbury Music Festival took place over the weekend. On Saturday night, Coldplay’s set featured a special guest: Michael J. Fox! The ‘Back to the Future’ actor joined the band onstage in a wheelchair and played a guitar in his lap. In the middle of the song, Chris Martin even belted out a little “Johnny B. Goode” . . . the song Michael brought to a new generation when his character sang it in “Back to the Future.”

When it was over, Chris thanked Fox and called him, “Our hero forever,” adding, “The main reason we’re in a band is ‘cuz of watching ‘Back to the Future’.”