Lament for Pvt. Jenkins is a piece included in the Halo: Original Soundtrack.
This piece is played during the cutscene where John-117 watches the video feed from Wallace Jenkins' helmet. The theme is also played on the level The Silent Cartographer, when Dropship Bravo 022 gives a Mayday call. It is also featured in the Halo 3 Arms Race ad.
The piece is a tense, moody ambient song by string orchestra. The piece opens with a dark, powerful drumbeat, followed by an apprehensive minor chord. Every seven seconds, the drum sounds again, punctuating a change in the chord. The song becomes increasingly disjointed towards the end, featuring the scrambled high notes typical of the Flood, and slowly fades out, leaving a dark air to the scene.