Drama originated from ancient Greek theater, where the two masks representing comedy and tragedy symbolized the Muses of those genres. Drama has been contrasted with epic and lyrical poetry since Aristotle's Poetics. The earliest drama film was made in 1908 and directed by D.W. Griffith. Main drama film companies and directors focus on television programs like EastEnders and award-winning drama series. Key features of drama include its central theme, plot events relating to the theme, interwoven characters, dialogue, music, and how costumes influence character impressions.