large crowd of people at a concert or stadium event

large crowd of people at a concert or stadium event. The audience is facing towards a stage, which is not visible in the frame, but can be inferred from the direction of the crowd. Many people are holding up their cell phones, with the screens illuminated, creating a sea of lights. The atmosphere appears energetic and enthusiastic, with cheering audible in the background. The venue seems to be a large indoor arena, judging by the high ceiling and extensive lighting structure. The overall impression is that of a lively and well-attended event.