A tragedy is a genre of drama based on human suffering, specifically by way of terrible or sorrowful events that befall a main character or cast of characters. Traditionally, the intention of tragedy is to invoke an accompanying catharsis, or a "pain [that] awakens pleasure," for the audience. While many cultures have developed forms that provoke this paradoxical response, the term tragedy often refers to a specific tradition of drama that has played a unique and important role historically in the self-definition of Western civilization. That tradition has been multiple and discontinuous, yet the term has often been used to invoke a powerful effect of cultural identity and historical continuity—"the Greeks and the Elizabethans, in one cultural form; Hellenes and Christians, in a common activity," as Raymond Williams puts it.

Originating in the theatre of ancient Greece 2500 years ago, where only a fraction of the works of Aeschylus, Sophocles and Euripides survive, as well as many fragments from other poets, and the later Roman tragedies of Seneca; through its singular articulations in the works of Shakespeare, Lope de Vega, Jean Racine, and Friedrich Schiller to the more recent naturalistic tragedy of Henrik Ibsen and August Strindberg; Nurul Momen's Nemesis' tragic vengeance & Samuel Beckett's modernist meditations on death, loss and suffering; Heiner Müller postmodernist reworkings of the tragic canon, tragedy has remained an important site of cultural experimentation, negotiation, struggle, and change. A long line of philosophers—which includes Plato, Aristotle, Saint Augustine, Voltaire, Hume, Diderot, Hegel, Schopenhauer, Kierkegaard, Nietzsche, Freud, Benjamin, Camus, Lacan, and Deleuze—have analysed, speculated upon, and criticised the genre.

In the wake of Aristotle's Poetics (335 BCE), tragedy has been used to make genre distinctions, whether at the scale of poetry in general (where the tragic divides against epic and lyric) or at the scale of the drama (where tragedy is opposed to comedy). In the modern era, tragedy has also been defined against drama, melodrama, the tragicomic, and epic theatre, with the result that some of the Greek tragedies have come to appear as tragicomedies and melodramas. Drama, in the narrow sense, cuts across the traditional division between comedy and tragedy in an anti- or a-generic deterritorialization from the mid-19th century onwards. Both Bertolt Brecht and Augusto Boal define their epic theatre projects (non-Aristotelian drama and Theatre of the Oppressed, respectively) against models of tragedy. Taxidou, however, reads epic theatre as an incorporation of tragic functions and its treatments of mourning and speculation.

Etymology The word "tragedy" appears to have been used to describe different phenomena at different times. It derives from Ancient Greek "goat song", which comes from τράγος tragos "he-goat" and ᾠδή ōidḗ "singing, ode." Scholars suspect this may be traced to a time when a goat was either the prizeSee Horace, Epistulae, II, 3, 220: "Carmine qui tragico vilem certavit ob hircum". in a competition of choral dancing or was what a chorus danced around prior to the animal's ritual sacrifice. In another view on the etymology, Athenaeus of Naucratis (2nd–3rd century CE) says that the original form of the word was trygodia from trygos (grape harvest) and ode (song), because those events were first introduced during grape harvest.

Writing in 335 BCE (long after the Golden Age of 5th-century Athenian tragedy), Aristotle provides the earliest surviving explanation for the origin of the dramatic art form in his Poetics, in which he argues that tragedy developed from the improvisations of the leader of choral dithyrambs (hymns sung and danced in praise of Dionysos, the god of wine and fertility):

In the same work, Aristotle attempts to provide a scholastic definition of what tragedy is:

There is some dissent to the dithyrambic origins of tragedy, mostly based on the differences between the shapes of their choruses and styles of dancing. A common descent from pre-Hellenic fertility and burial rites has been suggested. Friedrich Nietzsche discussed the origins of Greek tragedy in his early book The Birth of Tragedy (1872). Here, he suggests the name originates in the use of a chorus of goat-like satyrs in the original dithyrambs from which the tragic genre developed.

Scott Scullion writes:

Greek

Athenian tragedy—the oldest surviving form of tragedy—is a type of dance-drama that formed an important part of the theatrical culture of the city-state. Having emerged sometime during the 6th century BCE, it flowered during the 5th century BCE (from the end of which it began to spread throughout the Greek world), and continued to be popular until the beginning of the Hellenistic period. No tragedies from the 6th century and only 32 of the more than a thousand that were performed in the 5th century have survived. We have complete texts extant by Aeschylus, Sophocles, and Euripides. Aeschylus' The Persians is recognized to be the earliest extant Greek tragedy, and as such it is doubly unique among the extant ancient dramas.

Athenian tragedies were performed in late March/early April at an annual state religious festival in honor of Dionysus. The presentations took the form of a contest between three playwrights, who presented their works on three successive days. Each playwright offered a tetralogy consisting of three tragedies and a concluding comic piece called a satyr play. The four plays sometimes featured linked stories. Only one complete trilogy of tragedies has survived, the Oresteia of Aeschylus. The Greek theatre was in the open air, on the side of a hill, and performances of a trilogy and satyr play probably lasted most of the day. Performances were apparently open to all citizens, including women, but evidence is scant. The theatre of Dionysus at Athens probably held around 12,000 people.

All of the choral parts were sung (to the accompaniment of an aulos) and some of the actors' answers to the chorus were sung as well. The play as a whole was composed in various verse metres. All actors were male and wore masks. A Greek chorus danced as well as sang, though no one knows exactly what sorts of steps the chorus performed as it sang. Choral songs in tragedy are often divided into three sections: strophe ("turning, circling"), antistrophe ("counter-turning, counter-circling") and epode ("after-song").

Many ancient Greek tragedians employed the ekkyklêma as a theatrical device, which was a platform hidden behind the scene that could be rolled out to display the aftermath of some event which had happened out of sight of the audience. This event was frequently a brutal murder of some sort, an act of violence which could not be effectively portrayed visually, but an action of which the other characters must see the effects for it to have meaning and emotional resonance. A prime example of the use of the ekkyklêma is after the murder of Agamemnon in the first play of Aeschylus' Oresteia, when the king's butchered body is wheeled out in a grand display for all to see. Variations on the ekkyklêma are used in tragedies and other forms to this day, as writers still find it a useful and often powerful device for showing the consequences of extreme human actions. Another such device was a crane, the mechane, which served to hoist a god or goddess on stage when they were supposed to arrive flying. This device gave origin to the phrase "deus ex machina" ("god out of a machine"), that is, the surprise intervention of an unforeseen external factor that changes the outcome of an event.

Roman

Following the expansion of the Roman Republic (509–27 BCE) into several Greek territories between 270 and 240 BCE, Rome encountered Greek tragedy. From the later years of the republic and by means of the Roman Empire (27 BCE-476 CE), theatre spread west across Europe, around the Mediterranean and even reached Britain. While Greek tragedy continued to be performed throughout the Roman period, the year 240 BCE marks the beginning of regular Roman drama. Livius Andronicus began to write Roman tragedies, thus creating some of the first important works of Roman literature. Five years later, Gnaeus Naevius also began to write tragedies (though he was more appreciated for his comedies). No complete early Roman tragedy survives, though it was highly regarded in its day; historians know of three other early tragic playwrights—Quintus Ennius, Marcus Pacuvius and Lucius Accius.

From the time of the empire, the tragedies of two playwrights survive—one is an unknown author, while the other is the Stoic philosopher Seneca. Nine of Seneca's tragedies survive, all of which are fabula crepidata (tragedies adapted from Greek originals); his Phaedra, for example, was based on Euripides' Hippolytus. Historians do not know who wrote the only extant example of the fabula praetexta (tragedies based on Roman subjects), Octavia, but in former times it was mistakenly attributed to Seneca due to his appearance as a character in the tragedy.

Seneca's tragedies rework those of all three of the Athenian tragic playwrights whose work has survived. Probably meant to be recited at elite gatherings, they differ from the Greek versions with their long declamatory, narrative accounts of action, their obtrusive moralizing, and their bombastic rhetoric. They dwell on detailed accounts of horrible deeds and contain long reflective soliloquies. Though the gods rarely appear in these plays, ghosts and witches are abound. Senecan tragedies explore ideas of revenge, the occult, the supernatural, suicide, blood and gore. The Renaissance scholar Julius Caesar Scaliger (1484–1558), who knew both Latin and Greek, preferred Seneca to Euripides.

Renaissance Influence of Greek and Roman Classical Greek drama was largely forgotten in Western Europe from the Middle Ages to the beginning of the 16th century. Medieval theatre was dominated by mystery plays, morality plays, farces and miracle plays. In Italy, the models for tragedy in the later Middle Ages were Roman, particularly the works of Seneca, interest in which was reawakened by the Paduan Lovato de' Lovati (1241–1309). His pupil Albertino Mussato (1261–1329), also of Padua, in 1315 wrote the Latin verse tragedy Eccerinis, which uses the story of the tyrant Ezzelino III da Romano to highlight the danger to Padua posed by Cangrande della Scala of Verona. It was the first secular tragedy written since Roman times, and may be considered the first Italian tragedy identifiable as a Renaissance work. The earliest tragedies to employ purely classical themes are the Achilles written before 1390 by Antonio Loschi of Vicenza (c.1365–1441) and the Progne of the Venetian Gregorio Correr (1409–1464) which dates from 1428 to 1429.