|This article is written from the Real Life point of view|
Ing Battle is the theme that plays during a fight with the Ing. It is also used for the Dark Alpha Splinter, Jump, Boost, Spider and Power Bomb Guardian battles, but does not necessarily play during every battle with one or more Ing. It also plays during cutscenes that involve the Ing in some manner, such as Samus's first encounter with them, the last log for GFMC Task Force Herakles, and as Samus is escaping Dark Aether in the ending. In New Play Control! Metroid Prime 2: Dark Echoes and Metroid Prime Trilogy, the theme can be purchased in the Soundtrack Gallery.
The theme can be heard here.