Orbit of Glass
From Halopedia, the Halo wiki
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Orbit of Glass is a song included in the Halo 2 Original Soundtrack. Its length is 1:18 minutes. It is heard during the level "Sacred Icon" after the Arbiter drops through the last sets of pistons. It starts to snow as he is falling and shortly afterward you face the flood outside.
It is a remake of Ambient Wonder from the Halo: Original Soundtrack.
It is most likely named for the "orbit of glass" that occurs after the Covenant glass a planet.
