Are these good things to take to a concert?

So I'm going to a lady gaga concert in a couple of days(its my first concert); I'm going to the venue early because I'm in GA so i want a good spot. So far these are things i have packed in my backpack:
-powerbank for my phone
-red bull
-water
-granola bars
-cd case
-sharpie
-money(around $250)
-my camera (nikon aw110)
-ticket
-gum

What do you guys think? Is there anything I should be taking or leaving behind?

I think that's good. Try to bring as small a bag as you can so it's not so bulky, and your bag will probably be searched before you go in. Be careful carrying around that much cash!

You need to find out Head of time if cameras are allowed, often they are not. If so do not take one.