The roots of Greek drama are in religious festivals for the gods, chiefly Dionysus, the god of wine.
During Aeschylus's lifetime, dramatic competitions became part of the City Dionysia in the spring.
The festival opened with a procession, followed with a competition of boys singing dithyrambs and culminated in a pair of dramatic competitions.
The first competition Aeschylus would have participated in, consisted of three playwrights each presenting three tragic plays followed by a shorter comedic satyr play.
Such format is called a continuous tragic tetralogy.
It allowed Aeschylus to explore the human, theological, and cosmic dimensions of one or another mythic sequence, developing it in successive phases.
A second competition of five comedic playwrights followed, and the winners of both competitions were chosen by a panel of judges.

Aeschylus entered many of these competitions in his lifetime, and various ancient sources attribute between seventy and ninety plays to him.
Only seven tragedies have survived intact: The Persians, Seven against Thebes, The Suppliants, the trilogy known as The Oresteia, consisting of the three tragedies Agamemnon, The Libation Bearers and The Eumenides, together with Prometheus Bound (whose authorship is disputed).
With the exception of this last play – the success of which is uncertain – all of Aeschylus's extant tragedies are known to have won first prize at the City Dionysia.

The Alexandrian Life of Aeschylus claims that he won the first prize at the City Dionysia thirteen times.
This compares favorably with Sophocles' reported eighteen victories (with a substantially larger catalogue, at an estimated 120 plays), and dwarfs the five victories of Euripides, who is thought to have written roughly 90 plays.
The roots of Greek drama are in religious festivals for the gods, chiefly Dionysus, the god of wine. During Aeschylus's lifetime, dramatic competitions became part of the City Dionysia in the spring. The festival opened with a procession, followed with a competition of boys singing dithyrambs and culminated in a pair of dramatic competitions. The first competition Aeschylus would have participated in, consisted of three playwrights each presenting three tragic plays followed by a shorter comedic satyr play. Such format is called a continuous tragic tetralogy. It allowed Aeschylus to explore the human, theological, and cosmic dimensions of one or another mythic sequence, developing it in successive phases. A second competition of five comedic playwrights followed, and the winners of both competitions were chosen by a panel of judges.
Aeschylus entered many of these competitions in his lifetime, and various ancient sources attribute between seventy and ninety plays to him. Only seven tragedies have survived intact: The Persians, Seven against Thebes, The Suppliants, the trilogy known as The Oresteia, consisting of the three tragedies Agamemnon, The Libation Bearers and The Eumenides, together with Prometheus Bound (whose authorship is disputed). With the exception of this last play – the success of which is uncertain – all of Aeschylus's extant tragedies are known to have won first prize at the City Dionysia.
The Alexandrian Life of Aeschylus claims that he won the first prize at the City Dionysia thirteen times. This compares favorably with Sophocles' reported eighteen victories (with a substantially larger catalogue, at an estimated 120 plays), and dwarfs the five victories of Euripides, who is thought to have written roughly 90 plays.
Aeschylus