“No one was allowed to leave the theatre during his recitals, however pressing the reason. We read of women in the audience giving birth, and of men being so bored with listening and applauding that they furtively dropped down from the wall at the rear, since the gates were kept barred, or shammed dead and were carried away for burial.”
Cantante eo ne necessaria quidem causa excedere theatro licitum est. Itaque et enixae quaedam in spectaculis dicuntur et multi taedio audendi laudandique clausis oppidorum portis aut furtim desiluisse de muro aut morte simulata funere elati.
Of Nero's public performances in musical competitions.
Source: The Twelve Caesars, Nero, Ch. 23