Crateria Surface (Zero Mission)

"Crateria Surface", identified as 07 in the Sound Test, is a theme from Metroid: Zero Mission.

Description
This theme plays on the surface of Crateria, including the landing site of Samus Aran's Gunship; the area of the Chozo Ruins containing an entrance to Chozodia; and the landing site of the Space Pirate Mother Ship. A different theme plays through most of the Chozo Ruins, while a remix of Wrecked Ship plays in the subterranean caves of Crateria.

Much like Planet Zebes - Arrival on Crateria from Super Metroid, this theme is dark and ominous, but with a stronger presence compared to the previous theme's quiet and foreboding subtlety. Most of the song consists of a low male choir, in the style of other Chozo music from Zero Mission and Metroid Prime. An even lower vocal line provides steady droning beneath the melody.

The theme can be heard here: