This is the soundtrack of Half life 2, ep1 and ep2. 

DISCLAMER: The songs in this soundtrack were not made by me, all rights go to Valve and the people that worked on it.

Half-life 2 OST (Including episode 1 and 2)

half life osts (doesn't include hl:alyx)

Half-Life 2, Episode One, Episode Two Soundtracks.
Here is almost all the music from these games, 2-3 are missing.
But in "Half Life 2 Soundtrack (Full)" you could find songs that are missing.
Missing tracks: "Particle Ghost" and "Slow Light". I tried to upload this tracks, but they was deleted for some copyright reasons.

Half-Life 2 OST (Full)

Half Life 2 - CP Violation

Brane Scan

The Innsbruck Experiment

CP Violation

The Half-Life 2 soundtrack was composed by Kelly Bailey. It is an amalgamation of newly-composed music and several cues from Bailey's previous work on Half-Life. Most, if not all, of the tracks were named by Marc Laidlaw.

The limited edition Half-Life 2 "Gold" package included, among other exclusive extras, a CD soundtrack. Although the CD contains several exclusive tracks, it does not include all of the music heard in the game. Using an appropriate program, it is possible to extract all audio tracks heard in-game from the hl2_sound_misc_dir.vpk archive file. The soundtrack (save the CD versions of tracks 1 and 34) was also included in the game directory of both the full and demo Audiosurf releases on Steam. On September 24, 2014, the soundtrack was made available as free DLC to all owners of the game on Steam.

Audio Specs
     Sample Rate:        44KHz
     Channels:              2 (Stereo)
     Bits Per Sample:   16
     Average Bitrate:   320kbps

Half-Life 2

Biozeminade Fragment

Half-Life 2 Soundtrack

(Half-Life 2) Dark Energy

Half - Life Opposing Force OST - 05 - Fright

Half - Life Opposing Force OST - 04 - Listen

Half - Life Opposing Force OST - 03 - Name

Half - Life Opposing Force OST - 02 - Orbit

Half - Life Opposing Force OST - 01 - Scientific Proof

Half Life 2 OST.
Composer: Kelly Bailey

0:00 Hazardous Environments (Valve Theme)
1:26 CP Violation
3:13 CP Violation (Remix)
5:34 The Innsbruck Experiment
6:44 Brane Scan
8:28 Dark Energy
10:01 Pulse Phase
11:14 Ravenholm Reprise
12:08 Requiem for Ravenholm
12:43 Probably Not A Problem
14:09 Calabi-Yau Model
15:59 Slow Light
16:45 Apprehension and Evasion
19:03 Hunter Down
19:22 Our Resurrected Teleport
20:36 Miscount Detected
21:26 Triage at Dawn
22:14 Combine Harvester
23:37 Lab Practicum
26:35 Nova Prospekt
28:34 Broken Symmetry
29:39 LG Orbifold
32:33 Kaon
33:47 You're Not Supposed to Be Here
36:30 Suppression Field
37:28 Hard Fought
38:45 Particle Ghost
40:27 Shadows Fore and Aft
41:57 Neutrino Trap
43:34 Zero Point Energy Field
45:18 Echoes of Resonance Cascade
46:58 Black Mesa Inbound
49:14 Xen Relay
49:55 Tracking Device
51:00 Singularity
52:22 Dirac Shore
53:50 Escape Array
55:19 Negative Pressure
57:18 Tau-9
59:27 Something Secret Steers Us
1:01:31 Triple Entanglement
1:03:06 Biozeminade Fragment
1:03:40 Lambda Core

[Half Life 2 Episode 1]

1:05:27 Disrupted Original
1:06:48 Combine Advisory
1:08:40 Guard Down
1:10:23 Darkness At Noon
1:11:23 Self Destruction
1:13:27 Eine Kleiner Elevatormuzik
1:14:49 What Kind Of Hospital Is This
1:17:58 Infraradiant
1:22:40 Decay Mode
1:25:50 Penultimatum

[Half Life 2 Episode 2]

1:28:42 Vortal Combat
1:32:00 Last Legs
1:34:12 Eon Trap
1:37:30 Sector Sweep
1:40:20 Hunting Party
1:43:54 Abandoned In Place
1:46:45 Extinction Event Horizon
1:48:53 No One Rides For Free
1:50:00 Shu'ulathoi
1:52:42 Nectarium
1:54:33 Inhuman Frequency
1:56:27 Dark Interval

Half Life 2 Soundtrack (Full)

Valve Theme - Half Life - Hazardous Environments

Biozeminade Fragment

Ronald