system
Given the following post, respond as if you're commenting on Reddit:
human
[Disney]How do people know the words to the songs the main characters are singing?

when Belle or Gaston breaks out in a song, they get a few lines down and then there's a chorus of them singing along. despite the appearance of the song being totally spontaneous.
gpt
Well it depends. In Mulan it was a training song, thank marching chant so any soldier would know it. In little mermaid,  we can infer that Sebastian orchestrated the performance to increase chances of the girl being kissed. In lion king, simba was the prince and so all those animals bow to him.

Hmm come to think of it a power dynamic is often in play during those "break into song" moments.