Half-Life soundtrack

The Half-Life soundtrack was composed by Kelly Bailey.

Trivia

 * In the South Park episode "Woodland Critter Christmas", when Santa uses a SPAS-12 shotgun to kill the animals, the Adrenaline Horror plays on the background.
 * In several pre-release videos of Half-Life, different version of Diabolical Adrenaline Guitar can be heard. It was likely changed in Summer 1998, as the old version can be heard in E3 1998 Gruntfight video and is not heard in Half-Life: Day One.
 * The track Dark Piano Short appears to be a small piece of the Quake 2 track Stealth Frag.
 * The fan-made Freeman's Mind, a run-through of Half-Life with commentary about what Freeman is allegedly thinking as he goes through the game, features the opening of Military Precision for the title graphic.