Keep What You Steal

Keep What You Steal is the 2nd movement of Cortana Suite from the Halo 3: Original Soundtrack. It includes the tracks Keep What You Steal and Escape. The first section plays during the cutscene in which Cortana is rescued, with the rest during the level Cortana. The piano theme at the beginning of the piece again appears in the Halo: Reach track The Package and a brief reprise is heard in the Halo 4 main menu track Atonement.

It starts with a high strings note, followed by a variation of the piano melody from Finish the Fight. Strings then play the melody of the Gregorian-chant from the Halo Theme. The melody begins to swell, then quiets to a minor key. Strings still take the melody, but drums in the background get louder and louder until they block out the strings. At 2:00, strings begin a discordant melody, which continues to get louder until the end.

The name of the track is derived from Cortana's quote: "I'm a thief... but I keep what I steal." It runs for 2 minutes and 36.133 seconds (2:36.133).