Plautus, Mostellaria 1181
On his deathbed Beethoven allegedly spoke in Latin the words “Plaudite, amici, finita est comoedia” (described a few years later here). He was alluding to the actors’ exhortation to the audience to applaud, which usually appeared in some form at the end of a Roman comedy. Here’s a line very similar to Beethoven’s:
spectatores, fabula haec est acta, vos plausum date.
Audience, this play has been acted; give us your applause!