"The official soundtrack to Half-Life: Alyx. Following the story and locations of Half-Life: Alyx, the soundtrack evolves and combines industrial, electronic, experimental and orchestral cinematic pieces, alternating between abstract environmental, emotional soundscapes and direct action oriented cues."
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Several tracks are based off of music from the original Half-Life and Half-Life 2, composed by Kelly Bailey.
01-02 "Valve: Alyx" = "Valve Theme" (HL1) / "Hazardous Environments" (HL2)
03-09 "Tri-Vector Pre-Reverberation" = "Space Ocean" (HL1) / "Echoes of a Resonance Cascade" (HL2)
06-04 "Processing Tripmines" = "Steam In The Pipes" (HL1) / "Negative Pressure" (HL2)
10-01 "Infestation Ambience" = "Cavern Ambience" (HL1) / "Zero Point Energy Field" (HL2)
Над альбомом работал композитор Майк Мораски (String Arcade, The, Portal 2: Songs to Test By Volume 1, Portal 2: Songs to Test By Volume 3), а его релиз состоялся 24 апреля 2026 года. На саундтрек попало 72 композиции. Подборка является компиляцией оригинальной музыки. Выпуском пластинки занимался лейбл Ipecac Recordings.
CD 1
| 1 | Exposing Hostile | | |
| 2 | Valve: Alyx | | |
| 3 | Coetaneous Entanglement | | |
| 4 | Construction Strider | | |
| 5 | Engage. Quell. Inquire. | | |
| 6 | Insubordinate Relocation | | |
| 7 | City 17 Strider | | |
| 8 | Thirty Seven After Six | | |
| 9 | From Here to There in Under a Second | | |
CD 2
| 1 | Quaranta Giorni | | |
| 2 | Xombies | | |
| 3 | Only One | | |
| 4 | Matter of Perspective | | |
| 5 | Severed from the Vortessence | | |
| 6 | Is Or Will Be? | | |
CD 3
| 1 | What Did it Taste Like? | | |
| 2 | I Love This Gun | | |
| 3 | Extra-Dimensional Darkness | | |
| 4 | Quantum Cubicles | | |
| 5 | Infestation Control | | |
| 6 | Deployed and Designated to Prosecute | | |
| 7 | B3PbIBONACHOCTb | | |
| 8 | Anti-Citizen | | |
| 9 | Tri-Vector Pre-Reverberation | | |
| 10 | Harsh Industrial Train Crash | | |
| 11 | The Advisors | | |
| 12 | Prisoner Pod | | |
CD 4
| 1 | Charger | | |
| 2 | Scanning Hostile Biodats | | |
| 3 | Substation | | |
CD 5
| 1 | Alien Flora | | |
| 2 | Alien Fauna | | |
| 3 | Requiem Vortessence | | |
| 4 | Lightning Dog | | |
| 5 | Arachnophobia | | |
| 6 | Rabid Lightning | | |
| 7 | Extract. Resonate. Isolate | | |
| 8 | Level-5 Anti-Civil Activities | | |
CD 6
| 1 | Vortessence Lux | | |
| 2 | Hacking | | |
| 3 | Outbreak is Uncontained | | |
| 4 | Processing Tripmines | | |
CD 7
| 1 | Xenfestation Control | | |
| 2 | Sunset Vault | | |
| 3 | Ear Like Mozart | | |
| 4 | Jeff | | |
| 5 | Elevatormuzik | | |
| 6 | Trash Compactor Waltz | | |
| 7 | Quantum Antlion Tunnel | | |
CD 8
| 1 | Cats | | |
| 2 | Beasts of Prey | | |
| 3 | Insects and Reptiles | | |
CD 9
| 1 | The Last Substation | | |
| 2 | Trans-Human Crossfire | | |
| 3 | Let Me Talk to Your Super-Advisor | | |
| 4 | Terin #6 | | |
CD 10
| 1 | Infestation Ambience | | |
| 2 | A Gentle Docking | | |
| 3 | Overload Protocol | | |
| 4 | Cauterizer | | |
| 5 | P1 | | |
| 6 | Gravity Perforation Detail | | |
CD 11
| 1 | Reality Disruption Pulse | | |
| 2 | Icosahedron | | |
| 3 | Supersymmetry Dilation | | |
| 4 | Stringularity | | |
| 5 | Ekpyrosis | | |
| 6 | Alice Matter | | |
| 7 | Gravity Grenade Conflict | | |
| 8 | Superimposition | | |
| 9 | Consequences | | |
| 10 | HIRE | | |
