I loved every second playing Portal 2 even when it made me go mad trying to solve puzzles. The love of this game is sure to be shared by many and one distinctive person is Jeremy Garren who has remixed only the sounds and video from the official Portal 2 Trailers to bring you this amazing musical video. It is almost unbelievable to believe he had such limited tools, but judging by the video and sounds, they are indeed from the trailers and he has done a beautiful job.
You might be familiar with the sound arrangement that is because Garren says he was inspired by the great video mixer Pogo that makes sounds out of mostly Disney/pixar movies, and I have featured him before. While similar, this one is very amazing on its own.