Shadows is a song included in the Halo: Original Soundtrack.
It is notably the shortest song in the Halo: Original Soundtrack. Its first heard during the light bridge cutscene of Halo and also in the cutscene where you crashland the life pod, and when you are instructed to hold your position until the monitor returns, the first time on the third floor of The Library. Slight variations of some of the strings are heard throughout the course of the game, and in part of Truth and Reconciliation Suite. In Halo 2 and Halo 3 the same variations of the strings are heard and are normally played when Flood are either nearby or attacking, featured in the songs Shudder, Gravemind, and the last movement of Halo Reborn, which is played during the battle with 343 Guilty Spark.