VS. BOX

VS BOX, as named by the Metroid Prime & Fusion Original Soundtracks, is a music theme from Metroid Fusion. It was composed by Minako Hamano and Akira Fujiwara.

Description
As its name indicates, VS BOX plays during the boss fights against the B.O.X. Security Robot in Sector 3 and its X Parasite-infected form in Sector 6.

VS BOX consists of hard-hitting metallic beats, a fast-paced bass line, quiet high-pitched beeping, and a long rising glissando similar to those heard in other Fusion tracks such as VS Nightmare. This gives the theme an energetic and electronic vibe.

VS BOX can be heard here:

Trivia

 * Because B.O.X. is fought twice, VS BOX is the only unique boss theme that is heard multiple times in Fusion. All other boss themes are either shared between multiple bosses (such as VS Ishtar, Gedo) or only heard once (such as VS Mulcalah).