Michael J. Fox looked like he was having a blast as he watched John Mayer take the stage at an intimate SiriusXM concert in New York 🎸 It was a full-circle moment as John, 48, has said that seeing the Canadian actor play guitar in ‘Back to the Future’ inspired him to start playing at age 13. Both men were also recently celebrated at The Hollywood Reporter’s Social Impact Summit 🤍 📽️: jpasc24 #michaeljfox #johnmayer