British producer/performer Mark Ronson followed on the MySpace stage, getting some assistance from some special guests during his cover-laced set. The mastermind behind Amy Winehouse's Back to Black and Lily Allen's Alright, Still, Mark strummed on his guitar, bringing out his famous friends that included Rhymefest, Plastic Little, Phantom Planet's Alex Greenwald, Kenna and Daniel Merriweather. For a guy whose last album Version was simply decent, Mark made his show one of the best of the fest.