Japan · Musical Instrument Making

Koto Making (Koto-shi)

琴 / 箏 (Koto)

The koto (琴/箏) is Japan's national instrument — a 13-stringed zither 180cm in length produced from paulownia (桐 kiri) wood. Koto making is centered in Kyoto and Fukuoka and the defining technical challenge is the paulownia selection and aging: paulownia must be aged 50–100 years after the tree is felled for the wood to reach the acoustic quality required — the cellular structure continues to open and harden over decades, gradually improving resonance. During this aging process the koto-shi (koto maker) must assess the wood's progress by tapping specific positions on the plank — each tap producing a tone that indicates the resonance quality of that section. The final acoustic assessment before construction begins involves 21 specific tap positions on the paulownia plank, each assessed for tone, resonance length, and uniformity.

Risk level: Critically Endangered · Not separately inscribed; recognized within Japanese music heritage

Alternate Names
Koto; so no koto; thirteen-stringed zither
Geographic Center
Kyoto; Fukuoka (both primary koto production centers)
Community / Ethnic Group
Japanese; koto-shi artisan community
Estimated Origin
Transmission from China (zheng) in Nara period (710–794 CE); Japanese koto form established Heian period; 13-string standard from 17th century
Cultural Function
Primary instrument of sankyoku Japanese chamber music ensemble; solo concert instrument; traditional Japanese music education instrument; Shinto shrine ritual instrument
Primary Materials
Paulownia (桐 kiri — aged 50–100 years after felling); silk strings (絹糸 kinuito — 13 strings, different thicknesses); ivory or plastic bridges (kotoji 琴柱)
Primary Tools
Specialized koto planing tools (curved sole planes for inner surface shaping); knuckle for 21-point tap test; string bridge drilling tool
Process Overview
Paulownia selection and aging (50–100 years) → 21-point tap assessment → plank shaping (outer curvature) → inner surface hollowing (resonance chamber) → surface lacquering → bridge drilling and installation → stringing and bridge adjustment
Traditional Applications
Sankyoku chamber music; solo concert instrument; Shinto shrine ritual
Contemporary Applications
Contemporary music composition; international music collaboration; music education
Notable Practitioners
Maruya koto-shi workshop (丸屋) — Fukuoka, 200+ year tradition; fewer than 20 active koto-shi nationally
Key References
Malm, W. (1959). Japanese Music and Musical Instruments. Tuttle; Koto Makers Association publications; Agency for Cultural Affairs documentation
Verification Status
Verified

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