That game is Wild Arms the Vth Vanguard.

The OST came in two volumes, each three discs. That totals to make a six-disc OST. That's crazy.

Throw the opening single from Nana Mizuki, "Justice to Believe," on top, and you've got a Wild Arms full course meal.

To learn about these soundtracks, and whether or not they did any good without having Michiko Naruke on board, check out Dennis' reviews.

• RPGFan Soundtracks