At the Glastonbury Festival, Michael J. Fox made a surprise appearance on stage with Coldplay, showcasing his musical talents despite his battle with Parkinson's disease. The former "Back to the Future" star, known for his iconic role as Marty McFly, inspired Coldplay's formation with his performance in the 1985 film. With the band, Fox performed songs like "Humankind" and "Fix You," as well as "Johnny B. Goode" in a previous New York appearance. Coldplay frontman Chris Martin praised Fox's influence on the band and the audience joined in singing along to their hits. The event highlighted Fox's enduring impact on both music and film, as well as his dedication to Parkinson's research through the Michael J. Fox Foundation. Despite his retirement from acting, Fox continues to inspire and make a difference in the world of entertainment and health advocacy.