Rock Anthem for Saving the World
From Halopedia, the Halo wiki
Rock Anthem for Saving the World is a song included in the Halo: Original Soundtrack.
It is heard in it's full form on Silent Cartographer just after the Master Chief has activated the map. The initial part of the song is later heard at the base of the Control Room on the level Assault on the Control Room.
It runs for 1:20.