View source for List of Half-Life 1 music

{{subpage|[[Soundtrack lists]]}}{{hl1 series topicons}}
{{cleanup|The information from Combine Overwiki should be added, such as when the tracks play in the vanilla games.}}

This page documents the music available in {{hl1|4}}, {{hlop4|4}}, and {{hlbs|4}}, as well as mods using their content.
{{Todo|Document {{hls|4}} (and by extension, {{hldms|4}}).}}
== Half-Life ==
The following tracks are available in {{hl1|4}} and most first-party GoldSrc games {{hlop4|not|addtext={{hlbs}}}}, as well as mods for them that do not override the vanilla music files.
{{note|<ul>
<li> Track numbers based upon original retail CD track IDs, which are also used by {{ent|target_cdaudio}} and {{ent|trigger_cdaudio}}. Track 1 is a data track in the original retail CD. Album releases use the same track order, but start at 1 instead of 2.
<li> Track names taken from official album releases, as found on Steam, iTunes, and the official YouTube Music uploads.
<li> Some tracks were reused in {{hl2|2}}, either in their original form, or remixed; these have been indicated appropriately below.
</ul>}}
{{modernImportant|{{svencoop|4}} uses a different naming system. All tracks are named {{path|Half-Life<nowiki>##</nowiki>|mp3}} wherein {{code|<nowiki>##</nowiki>}} is the CD track number minus one.}}
{| class=standard-table
! # !! '''{{code|[[MP3]]}}''' file name 
! {{hl1|4}} album track name 
! {{hl2|4}} album track name
! Notes 
|-
| {{mono|2}} || {{file|Half-Life01|mp3}} 
| [https://www.youtube.com/watch?v=lx1qQOeMk10 Adrenaline Horror]
| N/A 
| Plays in [[Weve_Got_Hostiles|"We've Got Hostiles!"]] (c1a3b) when encountering the first Osprey of the game and a squad of HECU soldiers.
|-
| {{mono|3}} || {{file|Prospero01|mp3}} 
| [https://www.youtube.com/watch?v=8KxNBtMjSlk Vague Voices]
| [https://www.youtube.com/watch?v=jpDn62bjUCM Black Mesa Inbound]
| Plays in [[Black_Mesa_Inbound|Black Mesa Inbound]] (c0a0) during the tram ride to Sector C. 
|-
| {{mono|4}} || {{file|Half-Life12|mp3}} 
| [https://www.youtube.com/watch?v=4c-R_KBuZ2A Klaxon Beat]
| N/A 
| Plays in [[Anomalous_Materials|Anomalous Materials]] (c1a0d) when Gordon Freeman acquires the HEV Suit.
|-
| {{mono|5}} || {{file|Half-Life07|mp3}} 
| [https://www.youtube.com/watch?v=iUaNjxlBMNs Space Ocean]
| [https://www.youtube.com/watch?v=D1fni27X3pE Echoes of a Resonance Cascade]
| Plays in [[Unforeseen_Consequences|Unforeseen Consequences]] (c1a0c) at the beginning of the chapter as Gordon makes his way out of the Test Chamber. 
|-
| {{mono|6}} || {{file|Half-Life10|mp3}} 
| [https://www.youtube.com/watch?v=YlLg-UAgZBY Cavern Ambience]
| [https://www.youtube.com/watch?v=odFOKpcVwSE Zero Point Energy Field]
| Plays in [[Unforeseen_Consequences|Unforeseen Consequences]] (c1a1c) while descending on a platform as Headcrabs emerge from a vent above, and in [[Lambda_Core|Lambda Core]] (c3a2e) while descending on a platform with a truck, prior to fighting the Black Ops.
|-
| {{mono|7}} || {{file|Suspense01|mp3}} 
| [https://www.youtube.com/watch?v=LJ3XN8yiE3A Apprehensive]
| N/A 
| Plays four times, making it the most used track in the game. First in [[Unforeseen_Consequences|Unforeseen Consequences]] (c1a1f) when seeing a Zombie convulsing in a chair in front of a flashing monitor, second in [[Office_Complex|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!"|"Forget About Freeman!"]] (c3a1a) in the sewers when approaching an Ichthyosaur.
|-
| {{mono|8}} || {{file|Suspense03|mp3}} 
| [https://www.youtube.com/watch?v=aBYdo8aeico Bass String]
| N/A 
| Plays in [[Office_Complex|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.
|-
| {{mono|9}} || {{file|Half-Life09|mp3}} 
| [https://www.youtube.com/watch?v=EkX_4HsrYXQ Hurricane Strings]
| [https://www.youtube.com/watch?v=PkjD7DJJfAg Neutrino Trap]
| Plays in [[Office_Complex|Office Complex]] (c1a2c) in the dark room before the freezer area, where two zombies are eating from two scientists' dead bodies.
|-
| {{mono|10}} || {{file|Half-Life02|mp3}} 
| [https://www.youtube.com/watch?v=GXc-Qk6YlGI Diabolical Adrenaline Guitar]
| [https://www.youtube.com/watch?v=p0bPEnK38EI Lambda Core]
| Plays in [[Weve_Got_Hostiles|"We've Got Hostiles!"]] (c1a3d) immediately after the first encounter with the HECU, and in [[Surface_Tension|Surface Tension]] (c2a5b) after destroying the Apache and entering the cliff side pipes.
|-
| {{mono|11}} || {{file|Half-Life13|mp3}} 
| [https://www.youtube.com/watch?v=DdcdeS9kzFo Valve Theme (Extended)]
| [https://www.youtube.com/watch?v=SZLDHiDeqTc Hazardous Environments]
| Plays in [[Surface_Tension|Surface Tension]] (c2a5a) during the cliff side area.
|-
| {{mono|12}} || {{file|Half-Life04|mp3}} 
| [https://www.youtube.com/watch?v=Zy0mdIS04sw Nepal Monastery]
| N/A 
| Plays in [[Blast_Pit|Blast Pit]] (c1a4i) when entering the Silo and hearing the Tentacles for the first time, and in [[Surface_Tension|Surface Tension]] (c2a5x) when entering the realm of the Tentacle in the sand.
|-
| {{mono|13}} || {{file|Half-Life15|mp3}} 
| [https://www.youtube.com/watch?v=qwP2QPzBI4Q Alien Shock]
| [https://www.youtube.com/watch?v=DHumOYbtayQ Biozeminade Fragment (remix)]
| Plays in [[Power_Up|Power Up]] (c2a1) upon first seeing the Gargantua, and in [[Surface_Tension|Surface Tension]] (c2a5g) when encountering the Gargantua in the parking garage.
|-
| {{mono|14}} || {{file|Half-Life14|mp3}} 
| [https://www.youtube.com/watch?v=3BkG2pi8OAU Sirens in the Distance]
| [https://www.youtube.com/watch?v=edlbIVsoxQo Triple Entanglement (remix)]
| Plays in [[On_a_Rail|On A Rail]] (c2a2) when descending into the tunnels at the beginning of the chapter. 
|-
| {{mono|15}} || {{file|Half-Life16|mp3}} 
| [https://www.youtube.com/watch?v=VAJzipo22L8 Nuclear Mission Jam]
| [https://www.youtube.com/watch?v=EwuEdLPYt1w 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|Questionable Ethics]] (c2a4f) when picking up the Tau Cannon.
|-
| {{mono|16}} || {{file|Suspense02|mp3}} 
| [https://www.youtube.com/watch?v=dvxX42uczNU Scared Confused Short]
| N/A 
| Plays in [[Apprehension]] (c2a3d) after watching the security guard get assassinated by a Black Ops assassin, in [[Lambda_Core|Lambda Core]] (c3a2e) upon entering the room with the Black Ops, and in [[Endgame]] (c5a1) after declining the G-Man's offer.
|-
| {{mono|17}} || {{file|Half-Life03|mp3}} 
| [https://www.youtube.com/watch?v=8xmJmGYbHd0 Drums & Riffs]
| [https://www.youtube.com/watch?v=mrfx8Z-eEYQ Tau-9]
| Plays in [[On_a_Rail|On A Rail]] (c2a2h) after launching the Rocket. 
|-
| {{mono|18}} || {{file|Half-Life08|mp3}} 
| [https://www.youtube.com/watch?v=itvxpfCep_4 Hard Technology Rock]
| N/A 
| Plays in [["Forget_About_Freeman!"|"Forget About Freeman!"]] (c3a1b) when encountering Alien Grunts fighting HECU troops in the repair bay. 
|-
| {{mono|19}} || {{file|Prospero02|mp3}} 
| [https://www.youtube.com/watch?v=-iYoXSw7aek Steam in the Pipes]
| [https://www.youtube.com/watch?v=43zM9th523k Negative Pressure]
| Plays in [[Lambda_Core|Lambda Core]] (c3a2d) while opening the portal to Xen. 
|-
| {{mono|20}} || {{file|Half-Life05|mp3}} 
| [https://www.youtube.com/watch?v=jp6tXuGnE10 Electric Guitar Ambience]
| [https://www.youtube.com/watch?v=5JzwVpLQUR0 Escape Array]
| Plays in [[Surface_Tension|Surface Tension]] (c2a5c) in the area with Laser Trip Mines and a Sniper. 
|-
| {{mono|21}} || {{file|Prospero04|mp3}} 
| [https://www.youtube.com/watch?v=DQcvP-2L9KQ Dimensionless Deepness]
| [https://www.youtube.com/watch?v=R7_rsLc2WVo Dirac Shore]
| Plays in [[Xen]] (c4a1) in the teleporter room leading to the Gonarch's lair. 
|-
| {{mono|22}} || {{file|Half-Life11|mp3}} 
| [https://www.youtube.com/watch?v=w3ctKDiYHpE Military Precision]
| N/A 
| Plays in [[Residue_Processing|Residue Processing]] (c2a4a) when looking out from a vent to see a security guard fending off Headcrabs shortly before being killed by a Barnacle. 
|-
| {{mono|23}} || {{file|Half-Life06|mp3}} 
| [https://www.youtube.com/watch?v=Op__51Bngjg Jungle Drums]
| N/A 
| Plays in [[Gonarch's_Lair|Gonarch's Lair]] (c4a2) at the beginning of the chapter when encountering the Gonarch.
|-
| {{mono|24}} || {{file|Prospero03|mp3}} 
| [https://www.youtube.com/watch?v=l2EKVHKiVfk Traveling Through Limbo]
| [https://www.youtube.com/watch?v=t-RXh5Zijbw Singularity]
| Plays in [[Nihilanth]] (c4a3) while fighting the Nihilanth. 
|-
| {{mono|25}} || {{file|Half-Life17|mp3}} 
| [https://www.youtube.com/watch?v=7bywJmv8tvQ Credits Closing Theme]
| [https://www.youtube.com/watch?v=5wlZuCVCtFA Tracking Device (remix)]
| Plays during the credits sequence.
|-
| {{mono|26}} || {{file|Prospero05|mp3}} 
| [https://www.youtube.com/watch?v=fEFW2ha-ZYE Threatening Short]
| [https://www.youtube.com/watch?v=puNk-MSE_ZI Xen Relay]
| Plays in [[Xen]] (c4a1) after entering Xen, and in [[Interloper]] (c4a1f) at the portal leading to the Nihilanth's lair.
|-
| {{mono|27}} || {{file|Suspense05|mp3}} 
| [https://www.youtube.com/watch?v=FupijP4YUw8 Dark Piano Short]
| N/A 
| Plays in [[Questionable_Ethics|Questionable Ethics]] (c2a4d) upon first discovering the Alien Grunt trapped in a glass enclosure, and in [[Surface_Tension|Surface Tension]] (c2a5d) in the core of the missile storage room. 
|-
| {{mono|28}} || {{file|Suspense07|mp3}} 
| [https://www.youtube.com/watch?v=9XuTPUi4-A4 Sharp Fear Short]
| N/A 
| Plays in [[Power_Up|Power Up]] (c2a1) when killing the Gargantua. 
|-
| {{mono|29}} || {{file|[[Gamestartup]]|mp3}} 
| N/A 
| N/A 
| Not present in vanilla installation of {{hl1}}, but will play and loop upon startup if present.
|-
|}
{{tip|Lossless [[Wikipedia:FLAC|FLAC]] versions of all tracks can be downloaded for free via the Steam application.}} <!-- useful for modders that want to slightly edit the tracks, such as looping them -->

== Opposing Force and Blue Shift ==
{{stub}}
The following tracks are available in {{hlop4|4}} and {{hlbs|4}}, as well as mods using those games as a [[liblist.gam|{{mono|fallback_dir}}]].
{{note|<ul>
<li> Track numbers based upon original retail {{hlop4|2|nt=1}} CD track IDs, which are also used by {{ent|target_cdaudio}} and {{ent|trigger_cdaudio}}. Track 1 is a data track in the original retail CD.
<li> The retail version of {{hlbs|2|nt=1}} uses a different track order than {{hlop4|2|nt=1}}. As of the [[SteamPipe|SteamPipe update]], the Steam version uses the same track order for both games.
</ul>}}
{{modernImportant|{{svencoop|4}} uses a different naming system. All tracks are named {{path|OpposingForce<nowiki>##</nowiki>|mp3}} wherein {{code|<nowiki>##</nowiki>}} is the CD track number minus one.}}
{{todo|split track names into {{op4}} and {{hlbs}} columns}}
{| class=standard-table
! # !! '''{{code|[[MP3]]}}''' file name 
! Track name 
! {{hlop4|4|nt=1}} notes
! {{hlbs|4|nt=1}} notes 
|-
| {{mono|2}} || {{file|Half-Life01|mp3}} 
| Scientific Proof
| 
| 
|-
| {{mono|3}} || {{file|Prospero01|mp3}} 
| Orbit / The Awakening
| 
| 
|-
| {{mono|4}} || {{file|Half-Life12|mp3}} 
| Name
| 
| 
|-
| {{mono|5}} || {{file|Half-Life07|mp3}} 
| Listen / Spooky Oozings
| 
| 
|-
| {{mono|6}} || {{file|Half-Life10|mp3}} 
| Fright
| 
| Not used in ''Blue Shift''.
|-
| {{mono|7}} || {{file|Suspense01|mp3}} 
| Storm
| 
| 
|-
| {{mono|8}} || {{file|Suspense03|mp3}} 
| Trample / Spectre of Limbo
| 
| 
|-
| {{mono|9}} || {{file|Half-Life09|mp3}} 
| Bust / Race from Doom
| 
| 
|-
| {{mono|10}} || {{file|Half-Life02|mp3}} 
| The Beginning / Temple of Limbo
| 
| 
|-
| {{mono|11}} || {{file|Half-Life13|mp3}} 
| Lost in Thought / Wastes of Limbo
| 
| 
|-
| {{mono|12}} || {{file|Half-Life04|mp3}} 
| Danger Rises
| 
| 
|-
| {{mono|13}} || {{file|Half-Life15|mp3}} 
| Soothing Antagonist
| 
| 
|-
| {{mono|14}} || {{file|Half-Life14|mp3}} 
| Run / Stroke of Midnight
| 
| 
|-
| {{mono|15}} || {{file|Half-Life16|mp3}} 
| Open the Valve
| 
| 
|-
| {{mono|16}} || {{file|Suspense02|mp3}} 
| Tunnel
| 
| 
|-
| {{mono|17}} || {{file|Half-Life03|mp3}} 
| Chamber / The Ticking Timebomb
| 
| 
|-
| {{mono|18}} || {{file|Half-Life08|mp3}} 
| Maze
| 
| 
|-
| {{mono|19}} || {{file|Prospero02|mp3}} 
| Alien Forces
| 
| 
|-
| {{mono|20}} || {{file|Half-Life05|mp3}} 
| Planet
| 
| 
|-
| {{mono|21}} || {{file|Prospero04|mp3}} 
| N/A
| colspan="2" | Not present in vanilla installation of {{hlop4}} or {{hlbs}}; Steam version will fallback to {{hl1}} track instead.
|-
| {{mono|22}} || {{file|Half-Life11|mp3}} 
| N/A
| colspan="2" | Not present in vanilla installation of {{hlop4}} or {{hlbs}}; Steam version will fallback to {{hl1}} track instead.
|-
| {{mono|23}} || {{file|Half-Life06|mp3}} 
| N/A
| colspan="2" | Not present in vanilla installation of {{hlop4}} or {{hlbs}}; Steam version will fallback to {{hl1}} track instead.
|-
| {{mono|24}} || {{file|Prospero03|mp3}}
| N/A
| colspan="2" | Not present in vanilla installation of {{hlop4}} or {{hlbs}}; Steam version will fallback to {{hl1}} track instead.
|-
| {{mono|25}} || {{file|Half-Life17|mp3}} 
| N/A
| colspan="2" | Not present in vanilla installation of {{hlop4}} or {{hlbs}}; Steam version will fallback to {{hl1}} track instead.
|-
| {{mono|26}} || {{file|Prospero05|mp3}} 
| N/A
| colspan="2" | Not present in vanilla installation of {{hlop4}} or {{hlbs}}; Steam version will fallback to {{hl1}} track instead.
|-
| {{mono|27}} || {{file|Suspense05|mp3}} 
| N/A
| colspan="2" | Not present in vanilla installation of {{hlop4}} or {{hlbs}}; Steam version will fallback to {{hl1}} track instead.
|-
| {{mono|28}} || {{file|Suspense07|mp3}} 
| N/A
| colspan="2" | Not present in vanilla installation of {{hlop4}} or {{hlbs}}; Steam version will fallback to {{hl1}} track instead.
|-
| {{mono|29}} || {{file|[[Gamestartup]]|mp3}} 
| N/A
| colspan="2" | Not present in vanilla installation of {{hlop4}} or {{hlbs}}, but will play and loop upon startup if present.
|-
|}

== Trivia ==
* "Prospero" refers the canceled Valve project [https://combineoverwiki.net/wiki/Prospero ''Prospero''], one of the first two projects that Valve worked on, the other being ''Quiver'', which eventually became {{hl1|2}}.

== See also ==
* {{ent|target_cdaudio}}
* {{ent|trigger_cdaudio}}

== External links ==
* [https://www.youtube.com/playlist?list=OLAK5uy_mP4d7DekRBW9GoV573TUMtZhUdA5spsKk Half-Life 1 Soundtrack on YouTube (official playlist)]
* [https://www.youtube.com/playlist?list=OLAK5uy_nGh5DFY7pJR6LFGCWjNSY6wc3cw8i9QlA Half-Life 2 Soundtrack on YouTube (official playlist)]
* {{cow|Half-Life_soundtrack|Half-Life soundtrack}}, {{cow|Half-Life:_Opposing_Force_soundtrack|Half-Life: Opposing Force soundtrack}}, {{cow|Half-Life:_Blue_Shift_soundtrack|Half-Life: Blue Shift soundtrack}}, and {{cow|Half-Life_2_soundtrack|Half-Life 2 soundtrack}} on the Combine Overwiki
* [https://www.youtube.com/watch?v=CCrFqBPTybY "Half-Life: Blue Shift - Dreamcast vs. PC Soundtrack Comparison" by MarphitimusBlackimus on YouTube]

[[Category:Sound System]] [[Category:GoldSrc]] [[Category:Lists]]