Eating grapes with a knife and fork is not what one would call refined. It is what one would call ludicrous. - Judith Martin

If you put together all the ingredients that naturally attract children - sex, violence, revenge, spectacle and vigorous noise - what you have is grand opera.

Nevertheless, the same rule applies as at accidents. If you cannot fulfill the need for medical or practical assistance, help fill the need for privacy. The discipline required for studying medicine is nothing compared to that needed to stifle one’s curiosity.

The polite thing would be to say to the noisy person, “I beg your pardon, but I can’t hear the music. I wonder if you would mind talking more softly?” By the time you have said all this, a third party will utter a loud shush, thereby accomplishing your purpose without sacrificing your manners.