Koto is a virtual version of the 13 strings koto, the national instrument of Japan. Developed by Kofiro, this free Android multimedia application allows users to experience the traditional sound of the koto. The design is simple and user-friendly with a realistic sound quality that creates an authentic listening experience.

The koto is a half-tube zither derived from the Chinese zheng and se, and similar to other Asian instruments such as the Mongolian yatga, the Korean gayageum and ajaeng, the Vietnamese đàn tranh, the Sundanese kacapi, and the Kazakhstan jetigen. The app allows you to play the koto with ease, and different pieces possibly requiring different tuning.

Overall, Koto is an excellent application for anyone interested in traditional Japanese music. It is an excellent tool for beginners and professionals alike to learn and play the Japanese national instrument.