There's another big electronic dance music festival this weekend. Intro 2009 happens in Beijing and features 20 DJs programming 15 hours of music for what's expected to be a crowd of 10,000. Chris Leibing and M.A.N.D.Y. (above) are headliners. It's being billed as the nation's first such fest, but that doesn't sound right. (Shanghai has been doing dance music for years now, and there have been events at the Great Wall; this might be a case of promoter hype). The story.