If you're going to the 2013 Milwaukee Film Festival, the odds are good that you'll see - and even more likely hear - the Hypnotic Brass Ensemble. They're going to be performing at the opening night party. They will be in attendance for the Sept. 27 screening of "Brothers Hypnotic," a documentary by director Reuben Atlas about the literal band of brothers. And, as you'd guess, they'll be on the big screen.