Seeking Empire concert : Extreme low light challenge

I've done some decent concert photo shoot before but this one is definitely no walk in the park, an extreme low light concert like this one can really push  my D90 to its limit, my newly favorited 24-70 2.8 went almost useless, so this is when my 50 1.4 came to shine, although a prime lens for a rock concert might not be the best idea since it requires a lot of moving, but at f1.4 I was able to capture some decent shots. But it bugs me when I think about what a D3 can do in situation like this...seriously stop calling me, I can't afford you.
btw, do check out this awesome band "seeking empire" on youtube and like them on Facebook.
I promise, you will be hooked