Dramatic structure is the structure of a dramatic work such as a play or film. Many scholars have analyzed dramatic structure, beginning with Aristotle in his Poetics. This article looks at Aristotle's analysis of the Greek tragedy and on Gustav Freytag's analysis of ancient Greek and Shakespearean drama. Northrop Frye also offers a dramatic structure for the analysis of narratives: an inverted U-shaped plot structure for tragedies and a U-shaped plot structure for comedies.