Origins
I.Drama developed out of the Dithyramb, a choral performance in honor of the God of Wine, Dionysus.
II.According to tradition, Thespis, the Father of Drama, established dialog by moving one of the chorus out as the first actor, or hypokrites (answerer).
III.In 535, tragedy was officially recognized by the Athenian state.
IV.Tragedies were performed at religious festivals such as the City Dionysia in the spring.  Three competing playwrights would each put on three tragedies (a trilogy) and a Satyr Play, a short, mock-heroic satire.