Coldplay's headlining set at the Glastonbury Festival was marked by several surprise appearances, including a performance with Michael J. Fox, who played guitar on 'Humankind' and 'Fix You' despite being in a wheelchair due to Parkinson's disease. Chris Martin praised Fox as a lifelong hero, stating that 'Back to the Future' inspired the band's formation. Additionally, Coldplay debuted a new collaboration with rapper Little Simz, titled 'Supernova,' and performed 'MY UNIVERSE' in tribute to BTS members who are currently serving in the military. Chris Martin's fiancée, Dakota Johnson, and his children were seen supporting him from the VIP area. The set, which included hits like 'Yellow' and 'Viva La Vida,' was lauded as 'epic' by fans and critics alike.