Demons and Heretics

Demons and Heretics is the twelfth track in Halo: Combat Evolved Anniversary: Original Soundtrack.

Overview
The track is an arrangement of the similarly-named Devils... Monsters... from Halo: Original Soundtrack.

Appearances
The track plays in place of ''Devils... Monsters... in Halo: Combat Evolved Anniversary'':
 * In the level 343 Guilty Spark, when John-117 activates an elevator and it takes him deeper into the Flood containment facility through a blood-stained elevator shaft.
 * In the level The Library, at the first encounter with Flood carrier forms, when 343 Guilty Spark leaves John-117 at a locked door on the third floor after passing the index chamber, and at the end of the level when John-117 faced the final wave of the Flood before reaching the activation index.
 * In the level Two Betrayals, when John-117 approaches the final canyon to acquire a Type-26 Banshee to reach the final Phase pulse generator.
 * In the level The Maw, when John-117 enters the cryo area, and again in the armory if the player lingers there.

Production notes
Whereas the name of the original track alludes to the Flood, the name Demons and Heretics alludes to Spartans, commonly known as "Demons" among members of the Covenant, and humans, who have been branded as "Heretics" by the Covenant.