Valve has revealed that it has tapped the songwriting talents of Jonathon Coulton, computer programmer turned modern day rock star, for a surprise single to be included in The Orange Box, a compilation which includes Half-Life 2, Half-Life 2: Episode One, Half-Life 2: Episode Two, Portal and Team Fortress 2. The original cut to be included in The Orange Box was co-authored by Coulton and the Valve design team/fans who specifically solicited Coulton to help produce the surprise single.