Simple and self explanatory. I used to play on this (Now defunct)community called “Hobo Gaming” quite a few years back, and they used to have a thing where small snippets of songs would play at the end of each round depending on which side won.
For example, it would play a part of “Bad boys” by Inner Circle if Traitors win, or something like “WAR - Why Can’t We Be Friends” when Innocents win etcetera.
It is quite a cosmetic idea, but added a lot of liveliness back then. I don’t see why not!