Arcade Fire (this picture by Anton Corbijn). I saw them at Coachella in 2007, with the legendary drumsticks on the motorcycle helmet. Very epic. Saw them again at Coachella seven years later. Debbie Harry came on to sing "Heart of Glass" with them, and Régine Chassagne was visibly beside herself. Their set got cut at the very end of Wake Up, and they marched away with drums and a megaphone and everyone singing the "oh ohhhs". Beautiful.