Following on from yesterday's twentieth anniversary of the launch of the original Sonic the Hedgehog for the Sega Genesis, why not speed into your weekend with this clip of Video Games Live performing the familiar soundtrack to the title that started it all?  The orchestra cruises through sections of the themes from Green Hill Zone, Labyrinth Zone, Marble Zone, Starlight Zone, Scrap Brain Zone, a boss battle with Dr. Robotnik, Spring Yard Zone, and the classic main theme.  Don't worry if you feel the need to play the game again after you listen to the medley.  That's perfectly normal and is to be encouraged.