Portal 2 soundtrack



The Portal 2 soundtrack was composed by Mike Morasky, with the exception of the songs "Want You Gone" composed by Jonathan Coulton, "Offering," composed by Larry Stephens, an arrangement of Little Prelude in C Minor, BWV 934 by Johann Sebastian Bach, and "Exile Vilify," composed by The National.

While the music can be found in the game files, most tracks are unmixed and can only be fully experienced in-game, as most of the time the testing elements provide additional musical tones. The soundtrack is largely electronic and differs from the quiet ambient music used in the Portal soundtrack in that it is often upbeat.

Volume 1
On May 25, 2011 on the official Portal 2 blog, the first volume out of three of the complete soundtrack titled Portal 2 Soundtrack: Songs to Test By and featuring the fully mixed tracks was released for free on MP3 format, alongside ringtone versions for Android and iPhone.

On the blog, the soundtrack is marketed as an "aural stimulus package" developed by Aperture Science. In the MP3 files, Mike Morasky is credited as "Aperture Science Psychoacoustics Laboratory." Below are sections outlining the tracks from this volume.

Volume 2
On July 1, 2011, the second volume of the complete soundtrack titled Portal 2 Soundtrack: Songs to Test By and featuring the fully mixed tracks was released for free on the official Portal 2 blog.

Volume 3
On September 30, 2011 on the official Portal 2 blog, the third volume out of three of the complete soundtrack titled Portal 2 Soundtrack: Songs to Test By and featuring the fully mixed tracks was released for free.

Other music
The following tracks are not present in the Soundtrack releases but can still be found on the game files.