How do I make a character play a sound/voiceline when I fall into an bottomless pit?

[juney]

So I was thinking about adding in a code where if the character falls into an bottomless pit, it plays a sound for it like if the character were to be actually falling down a pit but I am not sure how to code that in. Does anyone know how to make a code to make a character play a sound when falling into a bottomless pit?