DITHYRAMB • FREE TRANSLATOR.ORG • Definition of Dithyramb

... proper types or not; and whether it is to be judged in itself, or in relation also to the audience,—this raises another question. Be that as it may, Tragedy—as also Comedy—was at first mere improvisation. The one originated with the authors of the Dithyramb, the other with those of the phallic songs, which are still in use in many of our cities. Tragedy advanced by slow degrees; each new element that showed itself was in turn developed. Having passed through many changes, it found its natural form, ...

— Poetics • Aristotle