Alien Corridors

Alien Corridors is a song included in the Halo: Original Soundtrack. It plays during the middle section of the level The Truth and Reconciliation.

The song is dominated by a series of odd, atonal chimes, similar to the noises given off by Covenant holopanels in that level. The song starts off with the "alien chimes" alone, but at 00:09, an extremely high synth note begins to assert itself, giving shape and pattern to the chimes. Starting at 00:19, a series of drums start up, giving the song a driving yet irregular beat. At 00:31, a crash of cymbals leads the song into its main section, allowing the drumbeats to push the song into a slightly frenetic pace as the high-pitched synth fades out. At 00:40, an even higher-pitched synth note takes over where the last one left off; the chimes shift their pattern and become somewhat more minor. At 00:49, another cymbal note removes the synth and sets the song's pace forward again as the chimes sound over the pulsing drums. At 00:56, the drums mostly drop out, revealing a midrange synth note underlying the song; shortly thereafter, the high synth returns to give the beatless piece a sense of shape. The piece continues without drums; at 01:17, the synth is joined by high strings, which slowly cycle through chords that drown out the chimes. At 01:29 the chimes become briefly audible again as the high strings fade out to make way for lower strings that continue the chords. The song gradually fades out with the midrange strings alone.

It runs for 1:50.