Songs to Test By is the soundtrack for Portal 2. Songs to Test By was made available free from the Portal 2 official website in .mp3 format, and a 4-disk Collectors Edition is available to purchase from Amazon.
Shorter versions of particular songs, or sound effects from the game, are available as ringtones from the website above. The soundtrack was released in three volumes: The first, titled Volume 1, was released on May 25, 2011; Volume 2 on July 1, 2011, Volume 3 on Sept. 30, 2011, and as a 4-disk Collectors Edition on October 30, 2012.
The Collectors Edition also includes in-game promotional items for Team Fortress 2, and to & in-game promotional items for Dota 2, and the Turret Lullaby comic.
Portal 2: Songs to Test By - Volume 1 (Collectors Edition Disk #1)
Album: Portal 2: Songs to Test By - Volume 1 by Aperture Science Psychoacoustics Laboratory
Portal 2: Songs to Test By - Volume 2 (Collectors Edition Disk #2)
Album: Portal 2: Songs to Test By - Volume 2 by Aperture Science Psychoacoustics Laboratory
- Template:Dictionary/audio/i am not a moron by Template:Dictionary/audio/i am not a moron on 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|Download]] | [[Media:Template:Dictionary/audio/i am not a moron|Play]]
Portal 2: Songs to Test By - Volume 3 (Collectors Edition Disk #3)
Album: Portal 2: Songs to Test By - Volume 3 by Aperture Science Psychoacoustics Laboratory
Collectors Edition Disk #4
There are no downloads because it's a copyrighted disk.
Album: Portal 2: Songs to Test By by Aperture Science Psychoacoustics Laboratories
Others
1. Exile Vilify - 4:46 by The National
Ringtones
Volume 1
- Turret Wife Serenade [0:19] | Download: mp3 | m4a | m4r | Play
- Science Is Fun [0:18] | Download: mp3 | m4a | m4r | Play
- The Friendly Faith Plate [0:16] | Download: mp3 | m4a | m4r | Play
- The Courtesy Call [0:16] | Download: mp3 | m4a | m4r | Play
- I Saw a Deer Today [0:29] | Download: mp3 | m4a | m4r | Play
- Comedy Equals Tragedy Plus Time [0:29] | Download: mp3 | m4a | m4r | Play
Volume 2
Music
- Halls of Science [0:14] | Download: mp3 | m4a | m4r | Play
- Music of the Spheres [0:19] | Download: mp3 | m4a | m4r | Play
- You Are Not Part Of The Control Group [0:18] | Download: mp3 | m4a | m4r | Play
- PotatOS Lament [0:15] | Download: mp3 | m4a | m4r | Play
- You Will Be Perfect [0:13] | Download: mp3 | m4a | m4r | Play
- Bring Your Daughter To Work Day [0:15] | Download: mp3 | m4a | m4r | Play
Sound Effects
- Button Positive [0:01] | Download: mp3 | m4a | m4r | Play
- Button Negative [0:01] | Download: mp3 | m4a | m4r | Play
- Door Open [0:01] | Download: mp3 | m4a | m4r | Play
- Door Close [0:01] | Download: mp3 | m4a | m4r | Play
- Shoot Blue Portal [0:01] | Download: mp3 | m4a | m4r | Play
- Shoot Orange Portal [0:01] | Download: mp3 | m4a | m4r | Play
- Blue Paint [0:02] | Download: mp3 | m4a | m4r | Play
- Turret Machine Gun [0:01] | Download: mp3 | m4a | m4r | Play
Volume 3
- Reconstructing More Science [0:08] | Download: mp3 | m4a | m4r | Play
- Your Precious Moon [0:10] | Download: mp3 | m4a | m4r | Play
- Cara Mia Addio [0:09] | Download: mp3 | m4a | m4r | Play
- Want You Gone [0:09] | Download: mp3 | m4a | m4r | Play
- Some Assembly Required [0:06] | Download: mp3 | m4a | m4r | Play
- Robots FTW [0:09] | Download: mp3 | m4a | m4r | Play
Trivia
- The track 9999999 is actually a remix of Music of the Spheres I, best heard when the slow part ends.
- The track The Courtesy Call has its first part unique to itself, the second part is a sped-up version of Music of the Spheres I and the last part is a slowed-down version of Reconstructing More Science