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:
1:02
Previous:
Strident
Next:
Marathon Sprint
To Sleep is the thirty-third track (Disc 2 Track 16) in Halo: Combat Evolved Anniversary: Original Soundtrack.
The track is an arrangement of Perchance to Dream from Halo: Original Soundtrack.
The track plays in place of Perchance to Dream during the campaign level Assault on the Control Room in Halo: Combat Evolved Anniversary, when John-117 continues on without Fireteam Zulu and enters a structure with sleeping Unggoy.
Like Perchance to Dream, the name To Sleep comes from the "To be, or not to be" soliloquy in William Shakespeare's Hamlet, in which the phrase "To sleep" directly preceded the phrase "Perchance to Dream".
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