"The tragic drama belonged essentially to the festivals in honour of the god Dionysus; being originally a chorus sung in his honour, to which were successively superadded: First, an iambic monologue; next, a dialogue with two actors; lastly, a regular plot with three actors, and a chorus itself interwoven into the scene. Its subjects were from the beginning, and always continued to be, persons either divine or heroic above the level of historical life, and borrowed from what was called the mythical past. 'The Persae' of Aeschylus, indeed, forms a splendid exception; but the two analogous dramas of his contemporary, Phrynichus, 'The Phoenissae,' and 'The Capture of Miletus,' were not successful enough to invite subsequent tragedians to meddle with contemporary events. To three serious dramas, or a trilogy--at first connected together by a sequence of subject more or less loose, but afterwards unconnected and on distinct subjects, through an innovation introduced by Sophocles, if not before--the tragic poet added a fourth or satyrical drama; the characters of which were satyrs, the companions of the god Dionysus, and other historic or mythical persons exhibited in farce. He thus made up a total of four dramas, or a tetralogy, which he got up and brought forward to contend for the prize at the festival. The expense of training the chorus and actors was chiefly furnished by the choregi,--wealthy citizens, of whom one was named for each of the ten tribes, and whose honour and vanity were greatly interested in obtaining a prize. At first these exhibitions took place on a temporary stage, with nothing but wooden supports and scaffolding; but shortly after the year 500 B.C., on an occasion when the poets Aeschylus and Pratinas were contending for the prize, this stage gave way during the ceremony, and lamentable mischief was the result. After that misfortune, a permanent theatre of stone was provided. To what extent the project was realised before the invasion of Xerxes we do not accurately know; but after his destructive occupation of Athens, the theatre, if any existed previously, would have to be rebuilt or renovated, along with other injured portions of the city." Curtius says:-- "Thespis was the founder of Attic tragedy. He had introduced a preliminary system of order into the alternation of recitative and song, into the business of the actor, and into the management of dress and stage. Solon was said to have disliked the art of Thespis, regarding as dangerous the violent excitement of feelings by means of phantastic representation; the Tyrants, on the other hand, encouraged this new popular diversion; it suited their policy that the poor should be entertained at the expense of the rich; the competition of rival tragic choirs was introduced; and the stage near the black poplar on the market-place became a centre of the festive merry- makings in Attica."