Want You Gone

"Want You Gone" is the song that goes along with the ending credits of Portal 2. .

Connection to game/GLaDOS

 * Well, here we are again - Portal being the sequel to Portal 2.
 * Remember when you tried to kill me twice? - The events of Portal.
 * Now I only want you gone - GLaDOS deciding not to kill Chell and letting her go.
 * Now little Caroline is in here too - Caroline is the personality GLaDOS was based on.

Composition
"Want You Gone" was written by Jonathan Coulton, who also wrote "Still Alive", and sung by Ellen McLain, the Voice actor for GLaDOS, an opera singer and also the singer of "Still Alive" in Portal.

Trivia

 * The line "I'll stop feeling so bad," while sung, is replaced by the word "[REDACTED]" during the cinematic credits. Prior to Portal 2's release, "[REDACTED]" was also the description of the Aperture Labs Hard Hat in Team Fortress 2.
 * The line "I'll stop feeling so bad," while sung, is replaced by the word "[REDACTED]" during the cinematic credits. Prior to Portal 2's release, "[REDACTED]" was also the description of the Aperture Labs Hard Hat in Team Fortress 2.