Fatal fight4 ~ vs. E.S. Levi - Michtam Underground Lab

 is a track in Xenosaga Episode III. It has not been released on any soundtrack or sound selection and not much is known about this track. It is a more sombre remix of fatal fight (Jin & Margulis) from the Xenosaga II: Jenseits von Gut und Böse ~Movie Scene Soundtrack~.

It plays as the battle theme for in the Isolated Zohar Research Facility.

A variation of this track (unofficially called ) which samples in the beginning, there was... from the Xenosaga II soundtrack at the end of the loop (not unlike the image theme of Xenosaga II) is stored within the game's files but went unused.