Here's a thing I like about the game: you have good chocobo music when you're riding your chocobo at a normal pace. But when you are walking slowly with it the music seamlessly fades into a soft woodwind arrangement of the theme.

I like both versions and it's nice how it dynamically adapts that sort of thing. There are a few other points the music does that as well, where you have these layers that fade into each other depending on what's going on. Its good audio design.