Music Video
Portal 2 OST Volume 1 - Comedy = Tragedy + Time
![Listen to Portal 2: Songs to Test By (Original Game Soundtrack) [Collectors Edition] by Aperture Science Psychoacoustic Laboratories](https://is1-ssl.mzstatic.com/image/thumb/Music122/v4/b8/98/4d/b8984dda-e37e-05a7-3d23-8512828a581c/5051083189118_cover.jpg/400x400bb.webp "Listen to Portal 2: Songs to Test By (Original Game Soundtrack) [Collectors Edition] by Aperture Science Psychoacoustic Laboratories")
Top Songs By Aperture Science Psychoacoustic Laboratories
Credits
PERFORMING ARTISTS
Aperture Science Psychoacoustic Laboratories
Performer
Valve
Sampler
COMPOSITION & LYRICS
Valve
Songwriter
PRODUCTION & ENGINEERING
Valve
Producer
