Out of Shadow
From Halopedia, the Halo wiki
Out of Shadow is a song included in the Halo 3: Original Soundtrack. It includes the tracks Out of Shadow and Into Light, and plays during the level Template:Levelname and Template:Levelname. In Halo 2, the first part of this song was played when you first encounter Jackal Snipers, and the second part of this song was heard during a battle with Shadows on the level Template:Levelname.
The song is a remake of Mombasa Suite from Halo 2. Listening to both tracks, similarities can be quickly found.
It runs for 4 minutes and 37 seconds.