Quote Originally Posted by cellorosin
Lets say that I am telling someone that I am nervous about an upcoming concert? Does that help with context at all?
Like Ramil did, I'd also use "волноваться" there. Я волнуюсь по поводу предстоящего концерта.
If you'd say "я нервничаю по поводу концерта", it could mean some unpleasant feelings.