Crateria Chozo Ruins

"Crateria Chozo Ruins", identified as 06 in the Sound Test, is a theme from Metroid: Zero Mission.

Description
This theme plays through most of the Chozo Ruins located on the surface of Crateria. In particular, it plays in the temple where Samus Aran acquires the Power Grip and the area to the right of Samus Aran's Gunship. However, in the section of the Chozo Ruins that leads to Chozodia, a different theme plays instead.

This theme consists largely of heavy drumbeats, the sound of wind, a low male choir chant, and various ambient effects. This minimalist approach gives the area an empty and desolate vibe. The practice of using a low choir fits the motif of other Chozo songs in Zero Mission and Metroid Prime.

The theme can be heard here: