It is the end credits song, and plays after GLaDOS is defeated by Chell (the game's protagonist and player character), with the lyrics suggesting that she (GLaDOS) is 'still alive'. The song originated in a meeting between two Valve developers and Coulton about him writing a song for the company, which Coulton accepted as he was a fan of the Half-Life series. It was written by Jonathan Coulton and was performed by Ellen McLain while portraying the Portal character GLaDOS. 'Still Alive' is a song featured in the 2007 video game Portal.
