On Saturday, the 26-year-old musician made his live comeback to the festival's Pyramid Stage after cancelling three weeks of shows due to concerns for his health. While the Forget Me singer reportedly started his set strong, he began apologising to the crowd when he struggled to finish songs as his Tourette syndrome symptoms appeared to worsen. "Glastonbury, I'm really sorry. I'm a bit annoyed with myself. I really apologise. You've all come out and my voice is really packing in."