Follow Our Brothers

Follow Our Brothers is the twelfth track (Disc 1 Track 12) included in Halo 3: Original Soundtrack, and primarily serves as the background music for the ending cutscene of the Halo 3 campaign level Floodgate.

Overview
The piece begins with a slow, single-note melody of strings, playing a rearrangement of the synth notes from Under Cover of Night (from Halo: Original Soundtrack). Higher strings then join in with a single note. The motif is then repeated with choir in the background. The music then switches to a minor key, still retaining the same slow melody. The strings softly transition into the melody of second part of Enough Dead Heroes (from Halo: Original Soundtrack), but the melody doesn't resolve, creating a sense of uncertainty. Instead it fades, to be replaced by snare drums, transitioning into a full rearrangement of Brothers in Arms: the strings melody swells into a triumphant fanfare, with strings returning for a somber and sad melody.

The track's name references the Halo: Combat Evolved soundtrack Brothers in Arms, and the second section of the piece is a full rearrangement of the track. The rearrangement also plays in the level The Storm. It first plays in full when John-117 enters the first lake bed, where a group of Marines are being attacked by a Type-52 Phantom. A lighter version (with snare drums, high strings, flute, and vocals) plays in the end of the level as John-117 and Thel 'Vadam approach the Type-27 Mantis.