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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 Edit
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.
|1||Science is Fun||02:33||Played during the Portal 2 TV Spot and other trailers. During the PotatoFoolsDay ARG, a full version was released with the game 'BIT.TRIP BEAT'.|
|2||Concentration Enhancing Menu Initialiser||02:17||In the PlayStation 3 menu selection when highlighting Portal 2.|
|3||9999999||03:11||Played on the first main menu screen and in the part near the end of The Escape when approaching the Central AI Chamber.|
|4||The Courtesy Call||03:37||Played when woken by Wheatley in the Aperture Science Extended Relaxation Center and throughout the container ride.|
|5||Technical Difficulties||03:22||Plays in all Announcer-supervised test chambers except for 01 and 05, and the second fling introductory chamber.|
|6||Overgrowth||02:51||Plays in the ruined Chamber 01.|
|7||Ghost of Rattman||04:06||In the Ratman chamber that surrounds the first Portal device.|
|8||Haunted Panels||01:36||Plays in the ruined Chamber 05.|
|9||The Future Starts With You||03:22||The second fling introductory chamber.|
|10||There She Is||04:21||Played when nearing and walking through Central AI Chamber for the first time.|
|11||You Know Her?||03:11||Played when waking GLaDOS and climbing through the Incinerator Room.|
|12||The Friendly Faith Plate||02:59||Played when flying through the air via an Aperture Science Aerial Faith Plate everywhere but in Test Chamber 06 in Chapter 2 where 15 Acres of Broken Glass is Played. and Test Chamber 10 of Chapter 2 where I Saw a Deer Today is Played|
|13||15 Acres of Broken Glass||05:00||Test Chamber 06 in Chapter 2|
|14||Love as a Construct||04:57||Test Chamber 07 in Chapter 2.|
|15||I Saw a Deer Today||03:13||Portions are heard while engaging laser locks and ricocheting off of Aperture Science Aerial Faith Plates in Test Chamber 10 of Chapter 2.|
|16||Hard Sunshine||02:48||Plays loudly when crouched on a Hard Light Bridge and plays quietly when not.|
|17||I'm Different||04:29||Portions are played when carrying or knocking over turrets in Test Chamber 13 in Chapter 3.|
|18||Adrenal Vapor||02:36||Test Chamber 14 in Chapter 3.|
|19||Turret Wife Serenade||01:39||Easter Egg in GLaDOS' Test Chamber 16.|
|20||I Made It All Up||03:57|| In Chapter 4, "The Surprise," while engaging the laser locks in Test Chamber 18.
This tune is also played over the menu after completing the Single Player campaign, with additional strings and elements of the Turret Opera. A scaled-down version plays when the laser-activated platform is moving in the fourth chamber of Chapter 2.
|21||Comedy = Tragedy + Time||03:30||Played during GLaDOS's Test Chamber 19.|
|22||Triple Laser Phase||04:15||GLaDOS's Test Chamber 20.|
Volume 2 Edit
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.
|1||You Will Be Perfect||02:40||Played in the "Cooperative Testing Initiative" and "Perfect 10" trailers.|
|2||Halls of Science 4||04:35||Played at the beginning of the Portal 2 TV Spot.|
|3||Bots Build Bots||04:07||The second main menu screen, which displays a conveyor belt inside the Turret Factory.|
|4||An Accent Beyond||02:58||Plays during the escape after GLaDOS Test Chamber 21.|
|5||Robot Ghost Story||03:07||Plays when Wheatley tells the story about the robot replicas.|
|6||Die Cut Laser Dance||02:00||Plays while on the conveyor moving large pieces of metal to be cut and later constructed into turrets.|
|7||Turret Redemption Line||03:23||Plays on the Turret Redemption Line.|
|8||Bring Your Daughter to Work Day||02:40||Plays whilst looking at the science projects produced by the employee daughters.|
|9||Almost at Fifty Percent||01:59||Plays in the Neurotoxin Generator chamber.|
|10||Don't Do It||05:16||When arriving in GLaDOS' rebuilt Central AI Chamber and during the subsequent stalemate resolution.|
|11||I AM NOT A MORON!||03:47||Wheatley's takeover after the Stalemate Resolution Button is pressed.|
|12||Vitrification Order||06:34||When heading through the old Aperture structures toward the condemned testing area.|
|13||Music of the Spheres||03:39||Plays in the entry room of old Aperture after unlocking the massive vault door. The latter portion also plays after completing the 1950s test chambers.|
|14||You Are Not Part of the Control Group||03:24||Plays during the first Repulsion Gel test.|
|15||Forwarding the Cause of Science||03:41||Plays during the 1950s test chambers.|
|16||PotatOS Lament||01:59||The third main menu screen, featuring the old Aperture structures.|
|17||The Reunion||03:46||Plays in the 1970s test chambers, with Propulsion Gel.|
|18||Music of the Spheres 2 (Incendiary Lemons)||02:44||Plays at the beginning and end of the 1970s test chambers and in several locations in the 1980s test chambers.|
Volume 3 Edit
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.
|1||Reconstructing More Science||02:37||In the final level when using the Propulsion Gel during the fight with Wheatley and in various trailers, including the Portal 2 teaser.|
|2||Wheatley Science||02:29||In the fourth main menu.|
|3||Franken Turrets||04:08||At the start of Chapter 8, in the Frankenturrets dedicated chamber made by Wheatley.|
|4||Machiavellian Bach||04:02||The classical music piece that Wheatley plays in Test Chamber 5|
|5||Excursion Funnel||04:32||Played when inside an Excursion funnel.|
|6||TEST||06:14||All of Wheatley's test chambers, except chamber 5. The theme becomes more intense with each chamber.|
|7||The Part Where He Kills You||03:23||In the fake Test Chamber 17, when Wheatley attempts to kill Chell realizing that he no longer needs her. The first section also plays when using the Excursion Funnel just after Chamber 12, where the elevator has melted.|
|8||Omg, What has He Done?||02:24||Heard when entering the final area before the boss chamber, in the excursion funnel on the way to the Central AI chamber, and while climbing up to where the corrupted core bin and AI chamber entrance are.|
|9||Bombs for Throwing at You||05:48||During the final boss of the game.|
|10||Your Precious Moon||01:55||Before and during the cut-scene that plays when the Portal is placed on the Moon.|
|11||Caroline Deleted||01:50||Played in GLaDOS' chamber before Chell is taken to the Turret Opera. Contains segments from "999999" and "Reconstructing More Science", as well as a few notes of "Love as a Construct" at the very beginning.|
|12||Cara Mia Addio!||02:34||The elevator ride out of the facility.|
|13||Want You Gone||02:22||The credits screen.|
|14||Spaaaaace||00:46||Played during Wheatley's final thoughts while stranded in Space, immediately following the credits.|
|15||Space Phase||01:33||In the fifth main menu.|
|16||Some Assembly Required||01:51||This is the introduction music for co-op|
|17||Robot Waiting Room #1||02:14||Played in the Hub.|
|18||Robot Waiting Room #2||02:14||Played in the Hub.|
|19||Robot Waiting Room #3||02:14||Played in the Hub.|
|20||Robot Waiting Room #4||02:14||Played in the Hub.|
|21||Robot Waiting Room #5||02:14||Played in the Hub.|
|22||Robot Waiting Room #6||02:06||Played in the Hub.|
|23||You Saved Science||00:48||Played before the end credits when the Vault is opened.|
|24||Robots FTW||03:38||Over the end credits to the co-op mode, behind GLaDOS' comments about the test subjects.|
Other music Edit
The following tracks are not present in the Soundtrack releases but can still be found on the game files.
|Exile Vilify by The National|| ||Plays on an Aperture Science Radio inside a Rattmann Den near Test Chamber 03 in Chapter 2.|
|Offering by Larry Stephens|| ||The original Test Chamber 04 from Portal as seen in Chapter 1. Only a small segment is played before the speakers glitch and shut down.|
|Say Apple|| ||The Courtesy Call: plays when Wheatley is bringing Chell to the original testing track from the first Portal game.|
|"This classical music"|| ||A piece of unidentified classical music the announcer has Chell listen to during her mandatory physical and mental wellness exercise, after Chell stares at the art on the wall for a few seconds, the announcer says "You should now feel mentally reinvigorated. If you suspect staring at art has not provided the required intellectual sustenance, reflect briefly on this classical music."|
|1950 Aperture Science welcome music|| ||Heard when Chell first restores power to the 1950s chambers at the bottom of Test Shaft 09, as Cave Johnson's voice welcomes "astronauts, war heroes, and Olympians." This song appears to be based upon the song "Santorini" by Yanni.|
|PeTI Editor music||Located in /portal2_dlc2/pak01_dir.vpk/||Heard in the Perpetual Testing Initiative mode while a player is creating a custom test chamber.|
- Songs to Test By on the official Portal 2 blog
|Music in the Half-Life and Portal Universe|
|Game soundtracks|| · Half-Life soundtrack · Half-Life: Opposing Force soundtrack · Half-Life: Blue Shift soundtrack · |
· Half-Life 2 soundtrack · Half-Life 2: Episode One soundtrack · Half-Life 2: Episode Two soundtrack ·
· Portal soundtrack · Portal 2 soundtrack ·
|Songs||· Exile Vilify · Cara Mia Addio! · Still Alive · Want You Gone ·|
|Real World Subjects|