Half-Life Soundtrack
| Composed by | Kelly Bailey |
| Published by | Valve |
| Release type | Game Soundtrack - Promo / Enclosure |
| Format | 1 Digital - 27 tracks |
| Release date | September 24, 2014 |
| Duration | 00:36:40 |
| Genres |
Bonus soundtrack for owners of the game "Half-Life" on Steam.
| 1 | Adrenaline Horror | 02:12 |  |
| 2 | Vague Voices | 02:14 | |
| 3 | Klaxon Beat | 01:02 | |
| 4 | Space Ocean | 01:38 | |
| 5 | Cavern Ambience | 01:42 | |
| 6 | Apprehensive | 00:25 | |
| 7 | Bass String | 00:11 | |
| 8 | Hurricane Strings | 01:35 | |
| 9 | Diabolical Adrenaline Guitar | 01:47 | |
| 10 | Valve Theme [Extended] | 01:25 | |
| 11 | Nepal Monastery | 02:10 | |
| 12 | Alien Shock | 00:38 | |
| 13 | Sirens In The Distance | 01:15 | |
| 14 | Nuclear Mission Jam | 02:03 | |
| 15 | Scared Confused Short | 00:18 | |
| 16 | Drums & Riffs | 02:06 | |
| 17 | Hard Technology Rock | 01:42 | |
| 18 | Steam In The Pipes | 01:58 | |
| 19 | Electric Guitar Ambience | 01:27 | |
| 20 | Dimensionless Deepness | 01:27 | |
| 21 | Military Precision | 01:23 | |
| 22 | Jungle Drums | 01:52 | |
| 23 | Traveling Through Limbo | 01:19 | |
| 24 | Credits Closing Theme | 01:42 | |
| 25 | Threatening Short | 00:40 | |
| 26 | Dark Piano Short | 00:19 | |
| 27 | Sharp Fear Short | 00:10 | |
