The Parts of the Tragedy
The formal parts of the tragedy's performance are given here in a brief outline.

Prologue
Extends from the opening of the play to the first full performance by the chorus.

Episode
Those scenes of the tragedy which take place between choric performances.

Exode Extends from the final choric performance to the end of the play.

Chorus
The choric performances are divided into two parts: the parode, the first full performance of the chorus while it is processing into the stage area, and the stasima, the choric performances that alternate with the episodes of dialogue by the actors.

Commos
A performance within the tragedy in which both actors and chorus take part.