kotsuzumi is a traditional Japanese drum used in various forms of theater, including Noh and Kabuki. It is a small, hand-held drum made from a wooden body and covered with animal skin on both ends. The drum is played with the hands, producing a unique sound that adds depth to performances. The kotsuzumi is often associated with the role of a narrator or storyteller in these theatrical forms. Its rhythmic patterns help convey emotions and enhance the overall atmosphere of the performance, making it an essential instrument in Japanese cultural traditions.