n indoor event, likely a performance or ceremony in a large stadium or arena

n indoor event, likely a performance or ceremony in a large stadium or arena. The stadium is filled with people in the stands, holding up lights (possibly cell phones). The ceiling is high with a complex metal structure. In the center of the floor, there's a circular stage with a spiral design. A group of performers is on the stage, likely engaged in a choreographed routine. There are also large white, kite-like objects floating in the air. Bright spotlights and other lighting effects illuminate the scene.