proagōn

proagōn, at Athens, a day or two before the dramatic competitions at the Great Dionysia and the Lenaea, the ceremonial appearance of choregoi, poets, actors, and choruses, when the names and subjects of the plays were announced. It was at the proagon of 406 BC after the death of Euripides that the audience was greatly moved by the appearance of Sophocles in mourning, with his actors and chorus not wearing the usual garlands.