Never Forget (Midnight Version)
From Halopedia, the Halo wiki
Never Forget (Midnight Version) is the nineteenth track on Volume 2 of the Halo 4: Original Soundtrack. It is a reinterpretation of Never Forget from the Halo 3: Original Soundtrack, which itself is based on Unforgotten from the Volume 2 of the Halo 2: Original Soundtrack. The track itself was composed by Kazuma Jinnouchi, while Martin O'Donnell and Michael Salvatori are merely credited as the original composers.
This soundtrack can be heard: