Sophocles was one of three greatest writers of Greek tragedy. He lived his entire life in Athens. In school, Sophocles studied theatre arts. Sophocles gave up performing because of his relatively weak voice. He also wrote one hundred and twenty-three plays and only 24 won first place, the rest won second. Sophocles lived from 496 to 406 B.C. He was the first playwright to have three across on stage at the same time. He was a conscious innovator in the theatre. He also increased the number of singers in the chorus. Sophocles wrote about partly mythical heroic era of Greek history. Only seven of Sophocles tragedies survived. Antigone is the daughter of Oedipus. Antigone have one sister and two brothers. Her brothers killed each other in a bloody