|This article is written from the Real Life point of view|
Helios is the battle theme of the boss of the same name in Metroid Prime 3: Corruption. It is one of the songs that can be purchased in the game's Soundtrack Gallery. On the UK Corruption website, it is known as Track_13 in the music player.
This orchestrated theme has a very repetitive and dissonant tone, emphasizing the mysterious nature of the boss himself.
It can be heard here: .