Theatre or theater is a collaborative form of fine art that uses live performers, typically actors or actresses, to present the experience of a real or imagined event before a live audience in a specific place, often a stage. Modern Western theatre comes, in large measure, from ancient Greek drama, from which it borrows technical terminology, classification into genres, and many of its themes, stock characters, and plot elements. Modern theatre includes performances of plays and musical theatrical activities in the language development of children. The art forms of ballet and opera are also theatre and use many conventions such as acting, costumes and staging.
The city-state of Athens is where western theatre originated. Since the words were the most important part, good acoustics and clear delivery were paramount. 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. No tragedies from the 6th century BCE and only 32 of the more than a thousand that were performed in during the 5th century BCE have survived. We have complete texts extant by Aeschylus, Sophocles, and Euripides.