Describe some people in the crowd present at public event

when i was in a concert once this was the concert of a famous singer of my country "name of singer" it was about the time of evening when the concert is supposed to start. there was many people who all was fans of the singer and want to see him singing live. when the singer reach on stage young people starting making intense noise some was using whistles to make the noise.

there was mostly the young people who were very energetics and looks excited towards the concert. there were also some children with their parents enjoying the songs. some crazy boys and girls starting shouting at the singer.