Antigone is a Greek play, and the Chorus is the narrator.
The Chorus in a Greek play provides the narration. Unlike modern plays, the Chorus was actually a big part of the telling of the story. The Chorus would explain things and describe things that were not taking place on the stage.
For example, Antigone and Ismene discuss their situation, but the chorus steps in and gives a detailed and very colorful explanation, including the details of the battle that left their brothers dead.
He fell in an arc to the hard ground,
torch in hand, the one who with raging onslaught
furiously was breathing
with the rush of the most hateful winds.(135)
But, those things went otherwise,
and great Ares sent them to
various fates, smiting them,
our chariot's strongest horse.
In many Greek plays, the Chorus provides an important role by narrating and commenting on the action of the story. Things that can’t come across by dialogue make more sense when the Chorus fills in the blanks. This moves the play along and helps the audience understand the story better. The Chorus tells the audience what to feel and when, so it was an invaluable asset to the theatrical experience.
Narration identifies who the narrator of a story is speaking to. In general, there are two types of narration: direct and indirect. In direct narration, the narrator talks directly to the reader; in indirect narration, the narrator speaks to an unknown or absent audience. Because “Antigone” is a play presented from the third-person point of view, there is no narrator who speaks directly to the reader. Thus, the narration is indirect.