large crowd of people gathered at night in what appears to be a park or outdoor space

large crowd of people gathered at night in what appears to be a park or outdoor space. In the middle of the crowd, there's a stage or performance area with lighting and sound equipment. Blue stage lights illuminate the performing artists. The crowd is dense and extends up a grassy hill. Some people are standing, others are sitting on the grass. People are watching the stage and some are holding up their phones, possibly recording or taking pictures. Streetlights line the periphery of the scene, with buildings visible in the distance across what appears to be a river or body of water. The overall atmosphere suggests a concert, festival, or outdoor event.