[@BBeast] I've been watching gameplay on youtube of this game that has some nice music. Maybe this'll fit? It might be a bit whimsical, see what you think.

[url=https://www.youtube.com/watch?v=A0gdM9Tzfu0]Dungeon Souls - Sewers[/url]

Also, it being game music, repeats on itself smoothly, which'll be nice for a tabletop.