Given that the question is about the plays written during the Classical age (ca. 480-323 BCE), let us first see how many of them have survived until today. read more
Now, my opinion is that one should read at least 1-3 plays from each of these four playwrights, if one is to form a clear idea about their techniques, their importance and their themes. From Aeschylus, I think that the Oresteia trilogy (Agamemnon, The Libation Bearers, The Eumenides) is a must read. read more
Death, violence and punishment by the gods follow, as is appropriate and expected for any Greek tragedy. Ultimately a morality tale against pride, the play is not only an essential read for wrapping up the Oedipus story, but its own merits as well. Medea by Euripedes. Like many other Greek tragedies, this play focuses on betrayal and revenge. read more