List of Half-Life 1 music

This page documents the music available in , , and , as well as mods using their content.
== Half-Life ==
The following tracks are available in and most first-party GoldSrc games , as well as mods for them that do not override the vanilla music files.
#	file name	album track name 	album track name 	Notes
 	 	Adrenaline Horror 	N/A 	Plays in "We've Got Hostiles!" (c1a3b) when encountering the first Osprey of the game and a squad of HECU soldiers.
 	 	Vague Voices 	Black Mesa Inbound 	Plays in Black Mesa Inbound (c0a0) during the tram ride to Sector C.
 	 	Klaxon Beat 	N/A 	Plays in Anomalous Materials (c1a0d) when Gordon Freeman acquires the HEV Suit.
 	 	Space Ocean 	Echoes of a Resonance Cascade	Plays in Unforeseen Consequences (c1a0c) at the beginning of the chapter as Gordon makes his way out of the Test Chamber.
 	 	Cavern Ambience 	Zero Point Energy Field 	Plays in Unforeseen Consequences (c1a1c) while descending on a platform as Headcrabs emerge from a vent above, and in Lambda Core (c3a2e) while descending on a platform with a truck, prior to fighting the Black Ops.
 	 	Apprehensive 	N/A 	Plays four times, making it the most used track in the game. First in Unforeseen Consequences (c1a1f) when seeing a Zombie convulsing in a chair in front of a flashing monitor, second in Office Complex (c1a2) while exiting the elevator and seeing a live wire blocking the path, third in Apprehension (c2a3a) when first encountering an Ichthyosaur, and finally in "Forget About Freeman!" (c3a1a) in the sewers when approaching an Ichthyosaur.
 	 	Bass String 	N/A 	Plays in Office Complex (c1a2b) in the cafeteria, where some zombies are picking over the corpses of some dead scientists and Headcrabs fall from the ceiling, and in Apprehension (c2a3c) upon entering the freezer area.
 	 	Hurricane Strings 	Neutrino Trap 	Plays in Office Complex (c1a2c) in the dark room before the freezer area, where two zombies are eating from two scientists' dead bodies.
 	 	Diabolical Adrenaline Guitar	Lambda Core 	Plays in "We've Got Hostiles!" (c1a3d) immediately after the first encounter with the HECU, and in Surface Tension (c2a5b) after destroying the Apache and entering the cliff side pipes.
 	 	Valve Theme (Extended) 	Hazardous Environments 	Plays in Surface Tension (c2a5a) during the cliff side area.
 	 	Nepal Monastery 	N/A 	Plays in Blast Pit (c1a4i) when entering the Silo and hearing the Tentacles for the first time, and in Surface Tension (c2a5x) when entering the realm of the Tentacle in the sand.
 	 	Alien Shock 	Biozeminade Fragment (remix) 	Plays in Power Up (c2a1) upon first seeing the Gargantua, and in Surface Tension (c2a5g) when encountering the Gargantua in the parking garage.
 	 	Sirens in the Distance 	Triple Entanglement (remix) 	Plays in On A Rail (c2a2) when descending into the tunnels at the beginning of the chapter.
 	 	Nuclear Mission Jam 	Something Secret Steers Us 	Plays in Apprehension (c2a3) at the beginning of the chapter while on the rail-car and encountering HECU troops, and in Questionable Ethics (c2a4f) when picking up the Tau Cannon.
 	 	Scared Confused Short 	N/A 	Plays in Apprehension (c2a3d) after watching the security guard get assassinated by a Black Ops assassin, in Lambda Core (c3a2e) upon entering the room with the Black Ops, and in Endgame (c5a1) after declining the G-Man's offer.
 	 	Drums & Riffs 	Tau-9 	Plays in On A Rail (c2a2h) after launching the Rocket.
 	 	Hard Technology Rock 	N/A 	Plays in "Forget About Freeman!" (c3a1b) when encountering Alien Grunts fighting HECU troops in the repair bay.
 	 	Steam in the Pipes 	Negative Pressure 	Plays in Lambda Core (c3a2d) while opening the portal to Xen.
 	 	Electric Guitar Ambience 	Escape Array 	Plays in Surface Tension (c2a5c) in the area with Laser Trip Mines and a Sniper.
 	 	Dimensionless Deepness 	Dirac Shore 	Plays in Xen (c4a1) in the teleporter room leading to the Gonarch's lair.
 	 	Military Precision 	N/A 	Plays in Residue Processing (c2a4a) when looking out from a vent to see a security guard fending off Headcrabs shortly before being killed by a Barnacle.
 	 	Jungle Drums 	N/A 	Plays in Gonarch's Lair (c4a2) at the beginning of the chapter when encountering the Gonarch.
 	 	Traveling Through Limbo 	Singularity 	Plays in Nihilanth (c4a3) while fighting the Nihilanth.
 	 	Credits Closing Theme 	Tracking Device (remix) 	Plays during the credits sequence.
 	 	Threatening Short 	Xen Relay 	Plays in Xen (c4a1) after entering Xen, and in Interloper (c4a1f) at the portal leading to the Nihilanth's lair.
 	 	Dark Piano Short 	N/A 	Plays in Questionable Ethics (c2a4d) upon first discovering the Alien Grunt trapped in a glass enclosure, and in Surface Tension (c2a5d) in the core of the missile storage room.
 	 	Sharp Fear Short 	N/A 	Plays in Power Up (c2a1) when killing the Gargantua.
 	 	N/A 	N/A 	Not present in vanilla installation of , but will play and loop upon startup if present.
 
== Opposing Force and Blue Shift ==
The following tracks are available in and , as well as mods using those games as a .
#	file name	Track name 	notes 	notes
 	 	Scientific Proof 	 	
 	 	Orbit / The Awakening 	 	
 	 	Name 	 	
 	 	Listen / Spooky Oozings 	 	
 	 	Fright 	 	Not used in Blue Shift.
 	 	Storm 	 	
 	 	Trample / Spectre of Limbo 	 	
 	 	Bust / Race from Doom 	 	
 	 	The Beginning / Temple of Limbo 	 	
 	 	Lost in Thought / Wastes of Limbo	 	
 	 	Danger Rises 	 	
 	 	Soothing Antagonist 	 	
 	 	Run / Stroke of Midnight 	 	
 	 	Open the Valve 	 	
 	 	Tunnel 	 	
 	 	Chamber / The Ticking Timebomb 	 	
 	 	Maze 	 	
 	 	Alien Forces 	 	
 	 	Planet 	 	
 	 	N/A 	Not present in vanilla installation of or ; Steam version will fallback to track instead. 	Not present in vanilla installation of or ; Steam version will fallback to track instead.
 	 	N/A 	Not present in vanilla installation of or ; Steam version will fallback to track instead. 	Not present in vanilla installation of or ; Steam version will fallback to track instead.
 	 	N/A 	Not present in vanilla installation of or ; Steam version will fallback to track instead. 	Not present in vanilla installation of or ; Steam version will fallback to track instead.
 	 	N/A 	Not present in vanilla installation of or ; Steam version will fallback to track instead. 	Not present in vanilla installation of or ; Steam version will fallback to track instead.
 	 	N/A 	Not present in vanilla installation of or ; Steam version will fallback to track instead. 	Not present in vanilla installation of or ; Steam version will fallback to track instead.
 	 	N/A 	Not present in vanilla installation of or ; Steam version will fallback to track instead. 	Not present in vanilla installation of or ; Steam version will fallback to track instead.
 	 	N/A 	Not present in vanilla installation of or ; Steam version will fallback to track instead. 	Not present in vanilla installation of or ; Steam version will fallback to track instead.
 	 	N/A 	Not present in vanilla installation of or ; Steam version will fallback to track instead. 	Not present in vanilla installation of or ; Steam version will fallback to track instead.
 	 	N/A 	Not present in vanilla installation of or , but will play and loop upon startup if present.	Not present in vanilla installation of or , but will play and loop upon startup if present.
== Trivia ==
* "Prospero" refers the canceled Valve project Prospero, one of the first two projects that Valve worked on, the other being Quiver, which eventually became .
== See also ==
* 
* 
== External links ==
* Half-Life 1 Soundtrack on YouTube (official playlist)
* Half-Life 2 Soundtrack on YouTube (official playlist)
* , , , and on the Combine Overwiki
* "Half-Life: Blue Shift - Dreamcast vs. PC Soundtrack Comparison" by MarphitimusBlackimus on YouTube
Category:Sound System Category:GoldSrc Category:Lists