Creeping into

creeping into is Disc 1, Track 6 on the Xenosaga III: Also Sprach Zarathustra Original Sound Best Tracks album.

It plays as the area music in the C.A.T. Testing Grounds in Fifth Jerusalem when the party breaks in at night to rescue KOS-MOS (except for on the hangar floor) until KOS-MOS is found. It also plays as the area music in the Acute Neurosis Treatment Facility and from when Voyager is fought to when the party retrieves the E.S.s.