I really really really like this shot. Wow. I have to say it's one of my favorites of the challenge. I don't know why, but it just hits me. The contrast is perfect, the levels are perfect, and composition is awesome. I have to give this a 9. Would give it a 10, but in other photos, there is more emotions on the musicians faces, but a 9 is the highest I've voted thus far. Outstanding!
Seeing as he's at the microphone, I'd have grabbed him with his mouth open and waited for them to get a bit more into it, they look a bit static here which is not what this kind of music is about. I'd also have tried to get a bit lower so the microphone was less close to the eyes of the performer at the back.