Question

In a brief essay, explain why music is invaluable to theater.

Give brief descriptions of how musical compositions can evoke different emotions.
How can music help generate revenue for the theater? Provide an example.

Answer 1

Since it didn't give the type of essay, I'm going to assume it's informative. So you can follow templates for that, though usually it's five paragraphs, you can shorten them down to three since it says brief.
As for the actual topic I'll give you resources to check out. Music helps to set the mood and scene. For example, a fast tempo gives rise to anxiety during a chase scene.
https://www.purposestudios.in/post/importance-of-music-in-films#:~:text=Music%20helps%20in%20setting%20the,particular%20dialogue%20is%20funny%2C%20etc.
https://www.popmatters.com/how-important-is-music-to-theatre
https://www.enotes.com/homework-help/why-is-music-important-in-a-play-304710
https://www.rider.edu/about/news/2014/10/14/symposium-examines-role-music-film#:~:text=Music%20in%20film%20serves%20several,iconic%20as%20the%20movies%20themselves.