Black Mesa (video game)/Soundtrack
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The Black Mesa soundtrack was composed by Joel Nielsen. It consists of two albums, the first one featuring the tracks from the earth-bound portion of the game with all the Xen-related tracks released later in the second album. Both albums were released before the respective parts of the game, they can be listened for free on YouTube or bought on several other platforms. The tracks can also be obtained by navigating to
steamapps\sourcemods\BMS\sound\music in the mod, or extracting the
steamapps\common\Black Mesa\bms\bms_sounds_misc_dir.vpk archive file of the Steam release with an appropriate program.
The first album was released on September 2, 2012, two weeks prior to the mod release. It was later updated with an early version of a track used in On A Rail later in 2012, and with a new track made for the updated Surface Tension in 2016, these additional tracks are only available on some of the platforms.
The first two tracks of the second album to appear in Xen became available on YouTube with release of the Xen Technical Beta on June 25, 2019, with the larger part of the whole album releasing on August 1. It was later updated with three additional tracks, Interloper, Catalyst and Event horizon, as well as minor mixing adjustments of Shadows of Death, Harbinger and Ascension. On November 25, the soundtrack was updated again with adjustments to The Hunting, Respite and Nihilist, and two new tracks – Resonance and Ascension Reprise. As with the Xen chapters themselves, the Xen soundtrack is only available in the game's Steam release.
* = not present in Black Mesa game files.
** = not present in a given soundtrack.
Black Mesa soundtrack
|Game #||OST #||Track title||Time||Music style||Level location||Comments|
|*||06||End Credits Part 1||1:27||Aggressive / uptempo||Does not appear in the game||Originally played during the first part of the credits, replaced with Limitless Potential in the complete game.|
|*||07||End Credits Part 2||1:56||Melodic / slow||Does not appear in the game||Originally played during the second part of the credits, replaced with Border Worlds in the complete game.|
|*||24||Unforeseen Consequences||1:07||Melodic / slow||Does not appear in the game||Originally played in Unforeseen Consequences while descending on the cargo lift, the track was removed in the complete game and replaced with Black Mesa Theme (Mesa Remix).|
|*||26||Black Mesa Theme (Mesa Remix)||1:18||Ambient||Does not appear in the game|| The original Black Mesa Theme track played backwards, with a different pitch.
Originally played right after the Resonance Cascade.
|*||27||Black Mesa Theme||0:54||Melodic / slow||Does not appear in the game||Used on the front page of the Black Mesa website around the time of the 2012 release.|
|*||29||Blast Pit 2||1:29||Melodic / slow||Does not appear in the game||Originally was to appear in the Blast Pit chapter.|
|*||31||On a Rail (leaked)||1:40||Agressive / Uptempo||Does not appear in the game||The track heard in the leaked On a Rail gameplay video.|
|01||09||Inbound Part 1||1:50||Ambient||Black Mesa Inbound: At the first part of the train ride.|
|02||10||Inbound Part 2||4:00||Ambient||Black Mesa Inbound: At the second part of the train ride.|
|03||11||Inbound Part 3||3:08||Ambient||Black Mesa Inbound: At the third part of the train ride.|
|04||01||Anomalous Materials||0:59||Aggressive / uptempo||Anomalous Materials: Upon acquiring the Hazardous Environment Suit.|
|06||30||Office Complex||1:20||Melodic / slow||Office Complex: When entering the first office after the power switch has been turned off.||Steam version only.|
|07||13||Office Complex (Mesa Remix)||1:38||Melodic / slow||Office Complex: Upon entering the freezer.||The original Office Complex track played backwards, with a different pitch.|
|08||25||We've Got Hostiles||1:58||Aggressive / uptempo||"We've Got Hostiles": While ascending on a lift to the surface.||Originally called WGH Topside.|
|09||03||Blast Pit 1||1:03||Ambient||Blast Pit: Upon entering the silo.|
|10||04||Blast Pit 2 (Mesa Remix)||1:59||Ambient||Blast Pit: Upon turning on the power generator.||The original Blast Pit 2 track played backwards, with a different pitch.|
|11||05||Blast Pit 3||1:32||Aggressive / uptempo||Blast Pit: Upon returning to the blast pit, after turning power, fuel and oxygen on.|
|12||16||Power Up||0:50||Ambient||Power Up: Upon killing the Gargantua.|
|13||14||On a Rail 1||2:15||Melodic / slow||On A Rail: At the beginning of the chapter, while descending on the first railway turntable.|
|14||15||On a Rail 2||1:08||Aggressive / uptempo||On A Rail: At the rocket launch pad, while battling the HECU.|
|15||02||Apprehension (Mesa Remix)||1:27||Ambient||Apprehension: Upon entering a room with three pistons inside. The first 17 seconds plays upon being knocked out by the HECU near the end of the chapter.||The original Apprenehsion track played backwards, with a different pitch.|
|16||28||Apprehension||1:47||Melodic / slow||Apprehension: Only the first 27 seconds is played while being dragged by two HECU Marines. The full track is never heard.|
|17||19||Residue Processing||1:01||Aggressive / uptempo||Residue Processing: While riding the conveyor belts.||The original version of this track was featured in the Black Mesa Teaser Trailer from 2007.|
|18||18||Questionable Ethics 2||0:55||Aggressive / uptempo||Questionable Ethics: Upon obtaining the Tau Cannon.|
|19||17||Questionable Ethics 1||1:22||Aggressive / uptempo||Questionable Ethics: During the HECU ambush at the lobby.|
|20, 21||20||Surface Tension 1||2:30||Aggressive / uptempo||Surface Tension: First part is played at the dam; second – while fighting the chopper on the cliffsides.||Originally called Surface Tension Theme.|
|22||21||Surface Tension 2||2:01||Aggressive / uptempo||Surface Tension: Upon entering the cliff wall area.|
|23||23||Surface Tension 4||1:30||Melodic / slow||Surface Tension: Upon entering the inner area of the explosives-filled warehouse.|
|24||32||Surface Tension Uncut||1:34||Agressive / Uptempo||Surface Tension: during the HECU battle against Xen forces when an Alien Craft destroys a tank.||Available only in the Steam version, added in the May 15, 2016 update that expanded the Surface Tension chapter. The original Surface Tension Uncut mod used the leaked On a Rail track instead.|
|25||22||Surface Tension 3||1:40||Aggressive / uptempo||Surface Tension: First part is played while approaching the Gargantua in the Topside Motorpool's underground parking; second – upon seeing the Gargantua.||The original version of this track, named Black Mesa Trailer 2 was featured in the second Black Mesa trailer from 2008.|
|26||08||Forget About Freeman||2:30||Aggressive / uptempo||"Forget About Freeman!": Upon rising from the sewers to battle dozens of HECU soldiers and a tank.|
|27||12||Lambda Core||1:15||Melodic / slow||Lambda Core: While descending the platform with a truck.|
Black Mesa: Xen soundtrack
|Game #||OST #||Track title||Time||Music style||Level location||Comments|
|*||17||Catalyst||2:32||Melodic / slow||Menu Music for Black Mesa.|
|*||18||Event Horizon||1:26||Ambient||Alternate menu music for Black Mesa.|
|01||19||Resonance||2:09||Melodic / slow||Unforeseen Consequences: After the Resonance Cascade.||According to Joel, this track was added in the complete game to tie Black Mesa and Xen a bit tighter together thematically. The track that originally played in its place, Black Mesa Theme (Mesa Mix), replaced Unforeseen Consquences, which in turn was removed from the game.|
|02||*||Mesa Theme (UC Remix)||1:21||Ambient||Unforeseen Consequences: While descending on the cargo lift.|| Remix of Black Mesa Theme (Mesa Mix) with added synths.
In the complete game this track appears instead of removed Unforeseen Consquences, with its place taken by a new track of the Xen album, Resonance, to tie Black Mesa and Xen tighter together thematically.
|03||01||Transcendent||1:35||Melodic / slow||Xen: upon coming out of the cave after being teleported from the Lambda Complex.|
|04||03||Entangled||1:45||Melodic / slow||Xen: plays upon entering the swamp, and seeing a Bullsquid getting stabbed by a Xen Tree.|
|05||04||Convergence||1:59||Melodic / slow||Xen: the first 20 seconds are played upon seeing the first island encountered in the original game. The whole track plays upon reaching the large tree branches connected to the aforementioned island.|
|06||05||Alien||3:04||Ambient||Gonarch's Lair: during the first encounter with the Gonarch.|
|07||07||Lair||3:52||Ambient||Gonarch's Lair: in a small area containing many yellow crystals, with the Gonarch standing on a large webbing above Gordon.|
|08||06||The Hunting (v2)||2:55||Agressive / Uptempo||Gonarch's Lair: the first part plays when the Gonarch destroys a bridge after Freeman has crossed the toxic water. The second part plays as Freeman escapes from the Gonarch after exiting a small cavern located next to a waterfall.|
|*||**||The Hunting (v1)||2:55||Agressive / Uptempo||Does not appear in the game||This version of the track was included in the initial soundtrack release. It features a rougher transition between the two parts of the track.|
|09||02||Internal Conflict||2:51||Agressive / Uptempo||Gonarch's Lair: during the final battle against the Gonarch.||Used in the 2018 Xen Trailer.|
|10||08||Mind Games||1:13||Agressive / Uptempo||Interloper: in the vortigaunt village after the Alien Controllers appear.|
|11||09||Shadows of Death (v2)||2:35||Agressive / Uptempo||Interloper: during the Gargantua chase sequence.|
|*||**||Shadows of Death (v1)||2:35||Agressive / Uptempo||Does not appear in the game||This version of the track was included in the initial soundtrack release. It features louder vocals and quieter synths compared to the final version that replaced it.|
|12||10||Interloper||1:44||Agressive / Uptempo||Interloper: after entering the Mines.|
|13||11||Harbinger (v2)||2:44||Melodic / slow||Interloper: after exiting the sabotaged Alien Grunt production facility in the Mines.|
|*||**||Harbinger (v1)||2:26||Melodic / slow||Does not appear in the game||This version of the track was included in the initial soundtrack release. It is slightly faster than the version that replaced it and features additional piano instrument.|
|14||12||Critical Mass||2:08||Agressive / Uptempo||Interloper: during the battle with Alien Controllers on the conveyor belts.|
|15||13||Ascension (v2)||3:15||Agressive / Uptempo||Interloper: while ascending to the portal leading to the Nihilanth.|
|*||**||Ascension (v1)||3:12||Agressive / Uptempo||Does not appear in the game||This version of the track was included in the initial soundtrack release. It differs slightly from the final version in its mixing and ending.|
|16||20||Ascension (Reprise)||3:17||Aggressive / Uptempo||Interloper: while ascending to the portal leading to the Nihilanth.|
|17||14||Respite (v2)||1:42||Melodic / slow||Interloper: near the last portal leading to the Nihilanth's cave.|
|*||**||Respite (v1)||1:36||Melodic / slow||Does not appear in the game||This version of the track was included in the initial soundtrack release. It is missing low synth and bass, thus being less intense and slightly lighter in mood.|
|18||21||Nihilist (v2)||5:15||Ambient||Nihilanth: during the final confrontation with the Nihilanth||The track is made entirely out of the vocals used in the other tracks.|
|*||**||Nihilist (v1)||5:00||Ambient||Does not appear in the game||An earlier version of the track, with some of the higher frequency tones being louder.|
|19||15||Limitless Potential||2:14||Agressive / Uptempo||Endgame: First part of the credits.|
|20||16||Border Worlds||1:43||Melodic / slow||Endgame: Second part of the credits.|
- Media on the Joel Nielsen's official website
- Black Mesa soundtrack on the Joel Nielsen's official website
- Black Mesa: Xen soundtrack on the Joel Nielsen's official website