Unfortunate Discovery

Unfortunate Discovery is the thirty-seventh track (Disc 2 Track 20) in Halo: Combat Evolved Anniversary: Original Soundtrack.

Overview
The track is an arrangement of What Once was Lost from Halo: Original Soundtrack.

Appearances
The track plays in place of What Once was Lost in Halo: Combat Evolved Anniversary:
 * In the opening of the level 343 Guilty Spark, before John-117 enters the Flood containment facility.
 * In the level Keyes, when John-117 enters the Flood-infested cargo bay of Truth and Reconciliation.