Title Singer Writer Album
Kokoro (Heart) Joanne Hogg Yasunori Mitsuda, Tetsuya Takahashi Xenosaga OST
Ormus Metro Voices Yasunori Mitsuda, Tetsuya Takahashi Xenosaga OST
Pain Joanne Hogg Yasunori Mitsuda, Tetsuya Takahashi Xenosaga OST