Threatening Power

 is Track 31 on the Xenosaga THE ANIMATION Original Soundtrack. It plays in the following scenes:
 * KOS-MOS absorbs the Gnosis fleet surrounding the Elsa in Episode 5.
 * Albedo monologues at MOMO in the Proto Merkabah in Episode 10.
 * The Proto Merkabah absorbs Gnosis as it appears in Episode 11.
 * KOS-MOS flies in front of the Elsa in order to shield its reentry into Second Miltia in Episode 12.