rpgs usually have really boring generic sleep music and it really bugs me so when we first played Wild ARMs it was such a good thing https://www.youtube.com/watch?v=Q8pU7E0F7KQ
Wild Arms has some great music in it. And if you've never heard the original "Ecstasy of Gold" that Michiko Naruke based the overworld theme on, it's pretty great in its own right too:
https://www.youtube.com/watch?v=nOr0na6mKJQ