Still Alive, the song that plays during the end credits of Portal (part of Valve's The Orange Box for Xbox360) is being offered as a free song for Rock Band 1 and Rock Band 2. Still Alive for Rock Band is a master track recording written by Jonathan Coulton and performed by GlaDOS. Visit the LIVE marketplace to add Still Alive to your download queue.
Xbox LIVE Marketplace | Rock Band
FREE XBOX Download from GlaDOS 
