The 1952 musical composition 4'33", composed by prolific American composer John Cage, is mainly comprised of what sound?

The answer is silence because the musical composition "4'33''" by American composer John Cage consists of the ambient sounds that occur in the performance space during the duration of the piece. Instead of traditional musical notes or sounds, Cage intended for the audience to focus on the environment itself and to become aware of the natural and unintentional sounds present in the moment, thereby highlighting the concept of silence as an active listening experience.