Blue Planet ~ Endless Journey

 is Track 34 on the Xenosaga THE ANIMATION Original Soundtrack. It is split into two parts, the first of which plays from the start of the track until 1:21, and the second of which plays from then until the end.

The first part plays in the following scenes:
 * The party enters the Durandal in Episode 5.
 * The Durandal docks with the Kukai Foundation in Episode 6.

A variation of the first part of the track with significantly less instrumentation plays in the following scenes:
 * Shion shows up in the Realian Maintenance Lab on the Woglinde in Episode 1.
 * Allen changes his mind about mutants while seeing the Kukai Foundation's city in Episode 6.
 * MOMO and Albedo argue about the desecration of MOMO's sisters in Episode 11.

The second part of the track plays when the party sees KOS-MOS standing on the bow of the Elsa after reentry into Second Miltia in Episode 12.

The second part is a remix of in this serenity. The melody at 2:47, at the end of the second part, is based upon a motif from Xenosaga Main Title.