How can i relate limits (in math) to music?
like maybe how a marching band will march next to each other but not touch?

We have to do a project in Calculus where we have to take something in real life and explain how it has a limit. (Teachers example was a horse jumping over a barrier, and how the horse wont touch the jump, but be very close to it). I want to do something music related. Any ideas?
i was thinking maybe
-marching bands march near each other and don't touch
-tuning: a note can be sharp and keep getting sharper but will never reach the next note up.
-an instruments limit? maybe how an instrument can only go to a certain note and will never be able to reach any higher.

I need help with ideas and i need an explanation as to how it is a limit.

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