Choruses are used in a variety of ways - in songs and dances, in crowd scenes, as bit-parts (with occasional lines of dialogue) and as "Greek Choruses" where "the people" comment on the action of the principal players.
All those forms are covered by this category!
One essential feature of the chorus is that its size is unspecified! We have captured the minimum total roles - including principals and the essential chorus characters, thus if you have a limited cast, don't be put-off by the presence of a chorus - use the Minimum and Maximum roles fields to see which pieces will fit your requirements.