Life or Death

Life or Death is Disc 1, Track 12 on the Xenosaga Original Soundtrack and Disc 2, Track 10 on the album. The melody at 0:41 is based on a motif from.

It plays during the cutscene when KOS-MOS begins her boot-up sequence on her own on the Woglinde. It also plays as the area music during the following story events:
 * On the Woglinde during the Gnosis attack.
 * On the Elsa after Ziggy and MOMO are rescued until the DOMO Carrier is defeated.
 * In the Kukai Foundation's City Sectors 26 and 27 during the Gnosis attack (until Gigas is defeated).