Created by Valve L.L.C. in 1998.| Name | Author |
|---|---|
| Cavern Ambience | Kelly Bailey |
| Hurricane Strings | Kelly Bailey |
| Steam In the Pipes | Kelly Bailey |
| Dimensionless Deepness | Kelly Bailey |
| Hard Technology Rock | Kelly Bailey |
| Sharp Fear Short | Kelly Bailey |
| Klaxon Beat | Kelly Bailey |
| Valve Theme (Long Version) | Kelly Bailey |
| Sirens In the Distance | Kelly Bailey |
| Alien Shock | Kelly Bailey |
| Space Ocean | Kelly Bailey |
| Nepal Monastery | Kelly Bailey |
| Dark Piano Short | Kelly Bailey |
| Nuclear Mission Jam | Kelly Bailey |
| Threatening Short | Kelly Bailey |
| Diabolical Adrenaline Guitar | Kelly Bailey |
| Drums and Riffs | Kelly Bailey |
| Adrenaline Horror | Kelly Bailey |
| Military Precision | Kelly Bailey |
| Electric Guitar Ambience | Kelly Bailey |
| Jungle Drums | Kelly Bailey |
| Apprehensive Short | Kelly Bailey |
| Traveling Through Limbo | Kelly Bailey |
| Bass String Short | Kelly Bailey |
| Scared Confusion Short | Kelly Bailey |
| Vague Voices | Kelly Bailey |
| Credits / Closing Theme | Kelly Bailey |
