Final answer:
The chorus in 'A Chorus Line' revolutionized the traditional role of the chorus in musical theater by giving individual chorus members their own stories and speaking roles, contributing to the narrative and allowing for a more diverse and inclusive cast.
Step-by-step explanation:
The structure of the chorus in the context of musical theater, particularly in shows like A Chorus Line, plays a significant role in both storytelling and production composition. Traditionally, the chorus would serve as a background feature for the main action. However, in innovative shows like A Chorus Line, the chorus moves to the forefront, becoming an integral part of the narrative. Not only does the chorus in this Broadway classic offer a musical backbone to the performance, but it also allows each member to embody individual characters, contributing richly to the storytelling.
The show launched a whole new genre of documentary musical where the individuals in the chorus were no longer just anonymous background singers and dancers. They were given depth and stories of their own, breaking ground with diverse casting and dealing with subjects like cross-dressing, plastic surgery, and various personal struggles. This approach minimized the need for a large number of actors while still delivering a powerful narrative punch.
Moreover, this new arrangement where chorus members take on speaking roles and have their individual stories told was a step towards inclusivity and storytelling innovation that would become a staple in the theater industry, as seen in later productions on Broadway.