Otsuzumi is a traditional Japanese drum used in classical theater, particularly in Noh and Kabuki performances. It is a large, barrel-shaped drum made from wood and covered with animal skin. The drum produces a deep, resonant sound that enhances the dramatic atmosphere of the performance. The player strikes the otsuzumi with their hands, creating rhythms that accompany the actors' movements and dialogue. This instrument is essential for conveying emotions and setting the pace of the performance, making it a vital part of Japan's rich cultural heritage in performing arts.