The middle section of the dream was a big musical number, and was mainly a bit of a transition from this studio theatre to a big sports hall, like in a high school, where the kids were gathered to watch a performance.
The final part was the one that felt like a comedy sketch, as the kids were sitting surrounding the sports hall (maybe basketball? It was a wooden floor) and a teacher was getting the kids on one side to bring their chairs closer to the playing area, a bit more, a bit more, until it was a triangle poking out into the stage, with one embarrassed kid out on his own at the front. A single actor wearing armour came on and stood right in front of this kid and prepared to do his speech. From somewhere else in the hall though kept coming the sound of a teacher saying "John! Sit down!" "Lucy! Sit down!" Every time the actor tried to start his speech the teacher's voice would interrupt, ordering another kid to sit down. He never did get to do the speech.