Photocritic.org have some pretty useful tips for taking better photos at a live band concert. So here’s what the author has to say regarding the tricky light conditions on most live band concerts.
“Second, observe. Concert lighting move in patterns, and you need to try and snap the photo of once the lighting is exactly right.
Always shoot in fully manual. It’ll be too dark for your auto focus, and the rapidly changing lights mean that your light meter is worthless. You need to be good, but your instincts will save you. If you can’t “feel” how a photo is going to turn out before you look at your digital display at the back of the camera, perhaps you aren’t ready for concert photography quite yet. There’s no shame in that – just keep practicing. “
See also: Photography Tips