Xenosaga 2 - Nephilim
Nephilim is a song from Xenosaga Episode II, named after and based on the character, Nephilim Verum. It is track 38 on the Xenosaga Episode II Original Soundtrack, having been composed by Yuki Kajiura.
It has a similar feel to Yasunori Mitsuda's version from Xenosaga Episode I, but has a different melody.