What are some great songs from "unassuming places"? - eviltoast

Me and my buddy are trying to put a set-list together with the theme mentioned in the title.

“Unassuming places” is intentionally a little vague, but the idea is that feeling of “damn, I did not expect a song from this [insert piece of media] to be that good,” or when you sit down and really listen to something you are surprised at well-composed it is, or songs that sound simple and reach a wide audience, but are actually a lot more complicated under the hood.

Some examples of the sounds we’re going for are:

You might also be able to call this list “songs geared towards children but are actually good” but I feel like that has more of a nursery rhyme-ish connotation and I’m hoping to branch out of that.

We’re a guitar duo with a jazz background, so songs that could potentially fit that mold are preferred, but I don’t want that to hinder anyone from giving suggestions! I’d love to see what anyone can come up with.