Good marketing includes and excludes.
It makes it clear that a particular artistic event is for certain types of people and ISN'T for others.
I know we hate the idea of excluding people. We believe art is supposed to be an inclusive thing. It's supposed to be for everybody.
But nothing is for everybody.
Every effective mission, whether it the battle to elect a President or the quest to sell soda pop, is based on gathering certain people. That implies that others must be left out.
The question is, are you clear about the audience you want and the audience you don't want?
Trust me, the only thing worse then having no audience is having the wrong type of audience.