system
Given the following post, respond as if you're commenting on Reddit:
human
eli5: When making movies how do they find really obscure songs which fit a scene?

Are there people out there who just know lots of songs and get asked to share their wisdom? Do they just look at a particular genre and keep looking till they find the right one?
An example from Breaking Bad is Freestyle by Taalbi Brothers. Who is responsible for this and how do they do it?
gpt
There are sound designers who’s job is to comb through archives to find stuff that fits the movie. Not only for songs but things like sound effects too. 

It’s a full time job for these people so I’m sure they have techniques to help narrow down the search, but at the end of the day it could just simply be spending hours and hours a week finding music that fits what you’re looking for.

And this doesn’t even mention that some movies will hire artists to make music specifically for that film. Ranging from small time bands to full orchestra composers.