Throughout Coldplay’s nearly 30-year career as a rock band, frontman Chris Martin has heard it all. From devoted fans who’ve time and again turned out en masse to fill stadiums to see them ...

When it turns out Chris Martin can't sing, he invites someone from the crowd onstage to help him, which turns out to be Macchio. "The Karate Kid" song appears on the deluxe version of Coldplay's ...