There is a stage area with the recorded music and the drums at the top.
Many of the children and a few of the adults were wearing kimonos. People dance in a circle around the stage. There are arm movements and claps and turns. I tried to follow what the other people were doing. (Maybe I should get someone to give me lessons before next year.)
It was dark and the dance circle large, so the pictures aren't great, but I hope you can get the idea. It was interesting and fun.