The Enigmatic Zohar

 is Track 28 on the Xenosaga THE ANIMATION Original Soundtrack. It plays in the following scenes:
 * A party recovers the Zohar Emulator from space in Episode 1.
 * Shion sees a vision of Nephilim in front of the Zohar Emulator in Episode 1.
 * Jr. notices the Zohar Emulator floating in space in Episode 5.
 * The party is shown the Durandal's Zohar Emulator room in Episode 5.

The version on the soundtrack is different from the version used in the animation, featuring an organ at 1:36.