The Luminoth is a theme from Metroid Prime 2: Echoes. It plays whenever Samus Aran talks to U-Mos or restores an Energy Controller. It also plays in the Sky Temple Gateway and at the end of the game when Samus returns from her battle with the Emperor Ing, liberating Aether. In Energy Controller restoration cutscenes, the theme is shorter and omits the later choral melody. In Metroid Prime Trilogy, it is available for purchase in the Soundtrack Gallery for one Silver Credit. The Luminoth was composed by Kenji Yamamoto. Some of its instruments are used in the Sun Generator Light and Dark themes.