Songs to Test By on soundtrack Portal 2-pelille. Songs to Test By oli saatavilla ilmaiseksi Portal 2-pelin virallisella sivulla .mp3-formaatissa. Lyhyemmät versiot pelin tietyistä lauluista tai ääniefekteistä ovat saatavilla soittoääninä. Soundtrack julkaistaan kolmessa volumessa: Ensimmäinen osa, nimellä Volume 1, julkaistiin 25. toukokuuta 2011. Volume 2 julkaistiin 1. heinäkuuta 2011 ja Volume 3 on vielä julkaisematon.
Volume 1
Science is Fun by Aperture Science Psychoacoustics Laboratory [2:33] | 
Lataa | 
Toista
Concentration Enhancing Menu Initialiser by Aperture Science Psychoacoustics Laboratory [2:33] | Lataa | Toista
9999999 by Aperture Science Psychoacoustics Laboratory [3:11] | Lataa | Toista
The Courtesy Call by Aperture Science Psychoacoustics Laboratory [3:37] | Lataa | Toista
Technical Difficulties by Aperture Science Psychoacoustics Laboratory [3:21] | Lataa | Toista
Overgrowth by Aperture Science Psychoacoustics Laboratory [2:50] | Lataa | Toista
Ghost of Rattman by Aperture Science Psychoacoustics Laboratory [4:06] | Lataa | Toista
Haunted Panels by Aperture Science Psychoacoustics Laboratory [1:36] | Lataa | Toista
The Future Starts With You by Aperture Science Psychoacoustics Laboratory [3:21] | Lataa | Toista
There She Is by Aperture Science Psychoacoustics Laboratory [4:20] | Lataa | Toista
You Know Her? by Aperture Science Psychoacoustics Laboratory [3:10] | Lataa | Toista
The Friendly Faith Plate by Aperture Science Psychoacoustics Laboratory [2:59] | Lataa | Toista
15 Acres of Broken Glass by Aperture Science Psychoacoustics Laboratory [4:59] | Lataa | Toista
Love as a Construct by Aperture Science Psychoacoustics Laboratory [4:57] | Lataa | Toista
I Saw a Deer Today by Aperture Science Psychoacoustics Laboratory [3:13] | Lataa | Toista
Hard Sunshine by Aperture Science Psychoacoustics Laboratory [2:48] | Lataa | Toista
I'm Different by Aperture Science Psychoacoustics Laboratory [4:28] | Lataa | Toista
Adrenal Vapor by Aperture Science Psychoacoustics Laboratory [2:36] | Lataa | Toista
Turret Wife Serenade by Aperture Science Psychoacoustics Laboratory [1:38] | Lataa | Toista
I Made It All Up by Aperture Science Psychoacoustics Laboratory [3:56] | Lataa | Toista
Comedy = Tragedy + Time by Aperture Science Psychoacoustics Laboratory [3:29] | Lataa | Toista
Triple Laser Phase by Aperture Science Psychoacoustics Laboratory [4:15] | Lataa | Toista
Volume 2
You Will Be Perfect by Aperture Science Psychoacoustics Laboratory [2:39] | Lataa | Toista
Halls Of Science 4 by Aperture Science Psychoacoustics Laboratory [4:35] | Lataa | Toista
Bots Build Bots by Aperture Science Psychoacoustics Laboratory [4:07] | Lataa | Toista
An Accent Beyond by Aperture Science Psychoacoustics Laboratory [2:58] | Lataa | Toista
Robot Ghost Story by Aperture Science Psychoacoustics Laboratory [3:07] | Lataa | Toista
Die Cut Laser Dance by Aperture Science Psychoacoustics Laboratory [2:01] | Lataa | Toista
Turret Redemption Line by Aperture Science Psychoacoustics Laboratory [3:23] | Lataa | Toista
Bring Your Daughter To Work Day by Aperture Science Psychoacoustics Laboratory [2:40] | Lataa | Toista
Almost At Fifty Percent by Aperture Science Psychoacoustics Laboratory [1:59] | Lataa | Toista
Don't Do It by Aperture Science Psychoacoustics Laboratory [5:16] | Lataa | Toista
Template:Dictionary/audio/i am not a moron by Template:Dictionary/audio/i am not a moron [[[:Template:Dictionary/audio/i am not a moron]]:Template:Dictionary/audio/i am not a moron] | [[Media:Template:Dictionary/audio/i am not a moron|Lataa]] | [[Media:Template:Dictionary/audio/i am not a moron|Toista]]
Vitrification Order by Aperture Science Psychoacoustics Laboratory [6:34] | Lataa | Toista
Music of the Spheres by Aperture Science Psychoacoustics Laboratory [3:38] | Lataa | Toista
You are Not Part Of the Control Group by Aperture Science Psychoacoustics Laboratory [3:24] | Lataa | Toista
Forwarding the Cause of Science by Aperture Science Psychoacoustics Laboratory [3:40] | Lataa | Toista
PotatOS Lament by Aperture Science Psychoacoustics Laboratory [1:59] | Lataa | Toista
The Reunion by Aperture Science Psychoacoustics Laboratory [3:45] | Lataa | Toista
Music of the Spheres 2 (Incendiary Lemons) by Aperture Science Psychoacoustics Laboratory [2:43] | Lataa | Toista
Muut
1. Exile Vilify - 4:46 The National
2. Want You Gone - 2:22
Soittoäänet
Volume 1
Turret Wife Serenade [0:19] | Lataa: mp3 | m4a | m4r | Toista
Science Is Fun [0:18] | Lataa: mp3 | m4a | m4r | Toista
The Friendly Faith Plate [0:16] | Lataa: mp3 | m4a | m4r | Toista
The Courtesy Call [0:16] | Lataa: mp3 | m4a | m4r | Toista
I Saw a Deer Today [0:29] | Lataa: mp3 | m4a | m4r | Toista
Comedy Equals Tragedy Plus Time [0:29] | Lataa: mp3 | m4a | m4r | Toista
Volume 2
Musiikki
Halls of Science [0:14] | Lataa: mp3 | m4a | m4r | Toista
Music of the Spheres [0:19] | Lataa: mp3 | m4a | m4r | Toista
You Are Not Part Of The Control Group [0:18] | Lataa: mp3 | m4a | m4r | Toista
PotatOS Lament [0:15] | Lataa: mp3 | m4a | m4r | Toista
You Will Be Perfect [0:13] | Lataa: mp3 | m4a | m4r | Toista
Bring Your Daughter To Work Day [0:15] | Lataa: mp3 | m4a | m4r | Toista
Ääniefektit
Button Positive [0:01] | Lataa: mp3 | m4a | m4r | Toista
Button Negative [0:01] | Lataa: mp3 | m4a | m4r | Toista
Door Open [0:01] | Lataa: mp3 | m4a | m4r | Toista
Door Close [0:01] | Lataa: mp3 | m4a | m4r | Toista
Shoot Blue Portal [0:01] | Lataa: mp3 | m4a | m4r | Toista
Shoot Orange Portal [0:01] | Lataa: mp3 | m4a | m4r | Toista
Blue Paint [0:02] | Lataa: mp3 | m4a | m4r | Toista
Turret Machine Gun [0:01] | Lataa: mp3 | m4a | m4r | Toista
Katso myös
Lähteet