In late 1985, I recorded an audition tape for the Missouri High School All-State Orchestra. Just prior to recording, Jenny, a cat who visited regularly, appeared in the family room window and started meowing.
"Now, you be quiet, please, during the recording," my bass teacher told Jenny.
Impressively, Jenny's silence lasted for exactly the duration of the taping. As soon as the teacher stopped the tape recorder, Jenny resumed her monologue, in her inimitable grizzled voice.
Some concertgoers could learn from Jenny's polite etiquette.