Michael Tait of the Newsboys

Michael Tait, former lead singer for DC Talk, is now the new front manfor the Newsboys. He's a good singer, but I prefer the sound of PeterFurler. This was taken when they played the Nebraska State Fair on 2Sept 2009.

I shot this with a manual focus Yashica ML 75-150mm f/4 lens which Ibought at a pawn shop in a batch with several other lenses for $11. It's a decent performer for the price. Focus was a little tough inthe highly variable concert lighting, so this didn't come out quiteperfect. What would you change to improve the shot?