From Halopedia, the Halo wiki
Album:
Halo: Combat Evolved Anniversary: Original Soundtrack
Composer(s):
Martin O'Donnell and Michael Salvatori (adapted by Brian Trifon, Lennie Moore, Paul Lipson, and Tom Salta)
Length:
2:13
Previous:
Dewy Decimate
Next:
Arborea Above
First Step is the twenty-eighth track (Disc 2 Track 11) in Halo: Combat Evolved Anniversary: Original Soundtrack.
The track is an arrangement of Perilous Journey from Halo: Original Soundtrack, albeit being a full orchestration of the track and shorter in duration.
The track plays in place of Perilous Journey in Halo: Combat Evolved Anniversary:
Random Slipspace Trajectory • Bravery, Brotherhood • Installation 04 • An End of Dying • Pale Rider • Yawning Chasm • A Private Service • Rock in a Hard Place • Flotsam, Jetsam • Captain, My Captain • Suite Fall • Demons and Heretics • Exfiltration •