Devils... Monsters...

Devils... Monsters... is the thirteenth piece included in the Halo: Original Soundtrack.

Overview
The name of the piece is a strong reference to the Flood, as it plays in the Library and for many of their other appearances. It repeats several notes many times, with carefully placed variations designed to surprise the listener. Much of the sounds are electronically-generated, and violins are incorporated at 0:12. An odd drum beat remains throughout the piece, reinforcing the eerie feeling of the music played. The piece is remastered into Demons and Heretics in the Halo: Combat Evolved Anniversary: Original Soundtrack.

Appearances
It can be heard:
 * 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, particularly at one in which 343 Guilty Spark leaves John-117 at a locked door, 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 returns to Canyon A 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.