Shooting Bands don't often need 'Fast' primes, due to the fact that most of the concert lighting are very concentrated LIKO lights.
exposure in the HOT spot of the LIKO will usually be a 4 - 5.6 or more at like 400 asa.
Problem is, when they are OUT of the spots.
Shooting bands is tough in small clubs.
In larger venues it's easier due to better lighting.
Focus will be your main problem/concern.
Don't use flash. It kills the 'feel', the 'mood'.
As Lexi said, if you can get some fast primes, that will help with the AF system in your camera and also give you the ability to shoot in lower light, if it's a small, dingy club with terrible light.
Have fun !!
What club ? I'm in LA as well.