I is a pretty balanced theme song. I t would be nice if the music team came up with something similar.
Maybe a mix between V and XII.
http://www.youtube.com/watch?v=j9k6st0hVyw
it's not the choco song but along this theme
Samba de Chocobo~
Definitely something in this style for the rental bird (which you'll be using at the start and not often, so this sort of theme won't get tiring) would be awesome.
Why not add every single Final Fantasy chocobo theme into the game, and whenever you jump on your choco, it randomly plays one of them or seamlessly transitions into a different theme.
I don't know, I think the Company Chocobo theme fits great in to the game. :)
heres my vote
http://www.youtube.com/watch?v=5HKHQWoMX8o
Aside of a new nice theme, it would be cool to be able to also turn off the mount music if you just want to listen to the area theme.