I just started shooting concerts in badly lit clubs a couple weeks ago. I have been experimenting with some different settings, while also trying to capture images that are not the traditional shot, getting my own style at the same time.
Here's an abstract shot of the guitarist. The entire band is so energetic, this particular club had horrible lighting, but I did get some... interesting shots...





And if the bands you like are any good they will eventually play in venues with decent lights. 

