Corridor 7: Alien Invasion (DOS)
The music track was first used in this game and plays in Floor 29. It is fast and quite aggresive to fit the atmosphere of the level where it plays. The track exists in both Floppy and CD versions of the game.
The song is called SLAY1 within AUDIOMUS.CO7 file and is a track number twelve.
Operation Body Count (DOS)
The song was later reused in Operation Body Count (DOS). It plays in Floor 6. However, the game can randomly pick this track as a background music if playing any level other than Floor 6, multiplayer deathmatch or randomizer game mode.
The song is called SLAY1 within AUDIOMUS.BC file, as in the previous game, and is a track number eight.