Edge Closer is a song included in the Halo 3: Original Soundtrack. It plays during the level The Ark, during the battle at the bottom of the Cartographer tower.

It starts with a gloomy, mysterious melody, reminiscent of the music played when facing the Flood in Halo 2. At around 0:40, the music quickens to a rapid drums beat. Later on, a soft melody is added to the background. At 2:10, choir starts a major melody, with drums and orchestral accompaniment. Near the end, the drums get dramatically louder, and the song fades to a close.

It runs for 3 minutes and 1 second (3:01).

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