I was incredibly surprised at how good DJ Danger Mouse's The Grey Album really is. It's obviously a cool idea, but he actually pulled it off pretty well. Clearly, it advances music and makes a contribution to our greater society. We've talked about it, as well as the Grey Tuesday protest over the last few weeks. Now the EFF has quick overview of the some of the copyright issues involved. Who owns the sounds? Who owns the tunes? Who owns the mix? All good questions.