Koto
Sou is a Japanese zither as known as koto.
| Type | Feature |
| Zokusou | Popular koto played by a lot of people nowadays |
| Gakusou | Koto played in gagaku, Japanese court music |
| Wagon | Ancient koto for gagaku, Japanese court music |
| School of Koto (Zokusou) | Feature |
| Ikuta | Square Plectrum |
| Yamada | Round Plectrum |
