Random Slipspace Trajectory
From Halopedia, the Halo wiki
Random Slipspace Trajectory is the first track (Disc 1 Track 1) in Halo: Combat Evolved Anniversary: Original Soundtrack.
The track is an arrangement of Opening Suite from Halo: Original Soundtrack. However, the Bungie logo musical theme in the introduction has been replaced by the opening synth effects from the later track Honest Negotiation Suite.
Halo: Combat Evolved Anniversary
The music in the track plays in place of their Opening Suite counterparts in Halo: Combat Evolved Anniversary:
Halo: The Master Chief Collection
The name Random Slipspace Trajectory alludes to the Cole Protocol, which stipulates that, when retreating from the Covenant, UNSC ships must enter Slipstream space with randomized vectors not directed towards any human worlds. The UNSC Pillar of Autumn was originally intended to make a random slipspace jump following its retreat following the Fall of Reach, but Cortana surreptitiously guided the ship to the Soell system and, ultimately, to Installation 04 instead.