Shion's Crisis

 is Disc 1, Track 9 on the Xenosaga Original Soundtrack and Disc 2, Track 7 on the album. ('Shion's Crisis' is an unofficial translation, as seen in the VGMdb listing of the album.) The melody at 0:45 is based on that of.

It plays in the cutscene where Shion is almost turned into salt on the Woglinde.