The battle of your soul

the battle of your soul is Disc 1, Track 7 on the Xenosaga III: Also Sprach Zarathustra Original Sound Best Tracks album.

It plays as the battle theme for the following bosses:
 * over Rennes-le-Château.
 * in Rennes-le-Château.
 * in Rennes-le-Château.
 * Voyager in the Elsa.