A
dramatic tool used for
exposition and general
mood-setting. Makes use of one or more
anonymous players who discuss the general state of
affairs in the
kingdom. They may communicate with the
principal characters as well.
The Greek chorus is still used today. The example that springs to my mind first is the Newscaster who comes on to conveniently discuss an arrest/murder/election that affects the plot.
Depending on who's directing, members of a Greek chorus may hold multiple roles during a performance.