Impend is a song included in the Halo 2 Original Soundtrack.
0:00 to 0:28 is exactly the same in Epilogue. It then makes a transition into a low pitch percussion beat. From this point to the end, the track is mostly percussion, but it does include some vocals similar to that of the opening of the Halo Theme. The percussion has three levels. There is the soft, low, and gong-like beat that is slower than the actual beat of the song. There is a slightly higher beat that is a much sharper sound, and is the actual beat of the song. Then there the actual overlay of the song itself, and it is synchronized with the vocals. This allows the track to maintain intensity, but not be so slow as to go against the pace of the combat. The length is 2 minutes and 21.897 seconds (2:21.897).
It is heard on multiple occasions, the first time being during the final fight to deactivate the Covenant bomb, on the level Cairo Station, where it is enhanced by the loading of the MAC gun. It is also heard at the beginning of the level Regret and during the fight in which the Arbiter releases the prisoners on the level The Great Journey.
Part of this song was remade into part of the song Released.
Halo 2: Anniversary