So for example:
Demons by Imagine Dragons. Describing the Demon within himself, and Emet has a Demon Core. Get it? The whole song doesn’t necessarily have to match with the character, maybe just the chorus or intro…
It can be related to the hunter’s/Monster’s lore or/and Ablities. Or even dropship conversations.
PS: This song actually goes really well with Emet when I first heard it lol