It is true since in ancient times the works were divided into five acts, which in turn were divided into scenes. There was a choir and a corifeo. The work is versed and rhythmic and there is always a narrator who was sometimes a corifeo, a soldier or a fortune teller. While in the modern theater there are many dramatic structures that can be in one, two or three acts, in a single scene, can be divided into pictures, there may or may not be a choir, a narrator or it may or may not be in verse or to be sung.
