To Sleep

To Sleep is the thirty-third track (Disc 2 Track 16) in Halo: Combat Evolved Anniversary: Original Soundtrack.

Overview
The track is an arrangement of Perchance to Dream from Halo: Original Soundtrack.

Appearances
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.

Production notes
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".