Prologue: Sets forth the subject and provides the mythological background necessary for understanding the events of the play.

Parodos: Song sung by the chorus as it first enters. Named for the corridors at the front of the stage of a Greek theater.

Episode: A scene of dialogue in which one or more actors take part.

Stasimon: A choral ode that often reflects on the dialogue and events of the preceding episode.

Exodos: A processional song sung by the chorus at the end of the play offering words of wisdom related to the actions and outcome of the play.

For additional information:

Ancient Greek Theater (Reed College)

Introduction to Greek Tragedy