The koto is a traditional Japanese musical instrument, primarily used for accompaniment. However, during the Edo period, a player named Yamada Kengyō created music that placed the koto at the center, leading to a flourishing production of the instrument in Edo. It is characterized by its loud volume and clear tone, producing a beautiful sound and rich resonance. Silk threads are used for the strings, and the body is typically made from paulownia wood. Skilled craftsmen meticulously adjust the instrument, considering the player's proficiency to achieve the ideal sound.