Its an excellent video editing job! Im hard of hearing but not doing audio for my deaf community that much. I have a GH1 but cant imagine how you edit with 4 GH1s with audio very well. I enjoyed the video!
I wonder why there is no banding that I can see? You have nice ISO noise and a pretty dark image, but not vertical lines. Was it actually fairly bright on stage, and you pushed it down in post? Nice, anyhow.