That's terrible jpeg artifacting all over the shot, or is it caused by a combination of high compression and NeatImage? Not particularly imaginative composition, and I feel his face is too near the top edge of the frame. I've never heard of him, but I hope you enjoyed this comical looking guy.
Unless I know that Gavin is a singer, the image doesn't convey Live Music - he could be a comedian for all I know. A shot that included the band or at least one other musician would help. Overall a good photo though.