First off, music is subjective. Everyone has their own opinion.

Just because one person likes one, doesn't mean someone else has to as well.

That being said, here are some tracks that are met with mostly positive praise. ENJOY :D

EDIT: Here is the main theme of the game, which is pretty freaking bada**

https://www.youtube.com/watch?v=Z61TC7Z81ao

Primordial Wilderness (Overfield theme of the first area, also, probably my favorite theme, with the Oblivia and Manon theme being tied for 2nd)

https://www.youtube.com/watch?v=G8sP6LH3qcw&index=129&list=PLQApUoZwEJGZbIQ3cjadh0EB4JmovBUOu

Noctilum Field Daytime (Overfield theme)

https://www.youtube.com/watch?v=gYrsFWOBsAQ&index=130&list=PLQApUoZwEJGZbIQ3cjadh0EB4JmovBUOu

Sylvalum Field Daytime (Overfield theme)

https://www.youtube.com/watch?v=FK2xkgY7NMo

Oblivia Field Daytime (Overfield theme)

https://www.youtube.com/watch?v=PvkrSV51L3E

Cauldros Field Daytime (Overfield theme)

https://www.youtube.com/watch?v=rzQKJ1Kl0hY

Manon Theme

https://www.youtube.com/watch?v=umLdPJ81SbE

Uncontrollable (Mini boss theme)

https://www.youtube.com/watch?v=d74FRtb3uTQ 

tag

The level of those songs is really good, I like them all

It´s overall a ost with variety and a lot of personality with some weird songs and some amazing ones.

Primordial Wilderness, though :D

Just listening to it gives you an idea of the sheer scale of the world!

Which is your favorite do you think?

Listen to the Oblivia theme, that one also gives you that idea.

Today this one. Tomorrow will change depending on my mood.

(I think primordial wilderness is overall the best one of this list)

I don't want to listen to too much of it before playing the game. But I've heard the Noctilum music and absolutely love it.

I agree with your title, but have not yet listened to your examples.. will get to that soon

Yeah, Oblivia's theme is just as epic!