Our audience here is very polite and quite, as a rule.
I remember going with my mother to some concert in the point a few years ago; people were still coming in up to forty minutes late (there was an accident on the road so many people couldn't make it in time), but then after the interval people were continuously coming in from the bar outside for about half an hour; the violinist got *quite* grumpy.
People are afraid to breath. It doesn't even matter if performers are bad or good or anything in between.
One always knows if the audience is listening. But here organizers put cough suppressing candy and if somebody starts coughing they are offered them right away.
What's next? Forcibly medicating concertgoers before letting them into the concert hall?