Joystiq notes that along with Half-Life 2, Half-Life 2: Episode One, Half-Life 2: Episode 2, Portal, and Team Fortress 2, folks who purchase Valve's Orange Box compilation will also be getting a musical treat. 'Geek Troubadour' Jonathan Coulton composed an entirely new song for the offering, apparently with help from the Valve design team. "At this point, with less than a week to go before the game's (games'? gameses'?) release, we're surprised the track hasn't already made its way to the seedy, illicit , peer-to-peer underbelly of the internet. Hey record industry, you should take notes!" The official Coulton site has plenty of information about the singer, and you can see his command performance of 're: your brains' from this year's PAX at the Penny Arcade site.