Koto article
Koto Explained: Features, Types and Tips
A long plank of paulownia with thirteen strings that rewards patience — here's what a koto is, where it came from, and how it actually works.
Lay a koto on the floor in front of you and it barely looks like an instrument at all — more like a long, pale plank of wood with strings stretched the length of it, waiting patiently to be understood. Give it a few minutes, though, and that patience pays off: this is one of the most elegant pieces of acoustic engineering to come out of Japan, and a gentler introduction than its size suggests. Here's what it is, where it came from, and how it actually works.
What is a koto?
A koto is a long Japanese plucked zither, traditionally around 180 centimetres from end to end, carved from a single arched piece of paulownia wood — a pale, light timber the Japanese call kiri. Thirteen strings run its full length, each resting over its own small, movable bridge. There's no fingerboard, no frets, and no fixed set of notes waiting for you the way there is on a piano. Instead, the player sets the pitch of every string separately before playing a single note.
Players wear three plectra, called tsume, on the thumb, index and middle fingers of the right hand, while the left hand reaches across to press strings on the far side of the bridges — raising the pitch, adding vibrato, and giving each phrase its particular shade of feeling.
A history that starts at the Japanese court
The instrument travelled to Japan from China sometime during the Nara period, roughly the 700s, and was folded into gagaku, the stately music of the imperial court. For centuries it stayed a court and aristocratic instrument, its playing style quite different from what most people picture today — early court technique, for instance, didn't use the left-hand pressing that later became so central to the sound.
Two performance schools shaped the tradition from there: Ikuta-ryū, associated with an angled sitting position and squared-off picks, and Yamada-ryū, known for a more front-facing posture and rounder plectra. Both remain active teaching lineages today, and the differences run deeper than posture — repertoire, ornamentation and tone all shift slightly between them. The koto also became central to sankyoku, chamber music combining it with shamisen and shakuhachi, a trio that still defines much of Japan's classical instrumental repertoire.
The twentieth century brought a major reshaping of the tradition through composer and performer Miyagi Michio, whose work modernised the repertoire and helped establish the deeper-voiced 17-string instrument alongside the traditional 13-string koto.
How the strings actually work
This is the part that surprises newcomers most: a koto has no fixed tuning at all. Each string sits over a small movable bridge, sometimes called a ji or kotoji, and sliding that bridge along the body shortens or lengthens the vibrating section of string, which raises or lowers its pitch. Before playing a piece, the performer sets up every bridge for the scale that piece requires, then plays from there. It's less like tuning a guitar and more like building a small, temporary keyboard for exactly the music at hand.
One instrument, several sizes
| Type | Strings | Typical role |
|---|---|---|
| Standard koto | 13 | The traditional concert and teaching instrument |
| Jūshichigen | 17 | Lower-register bass instrument in ensembles |
| Extended koto | 20 or 25 | Wider range for contemporary and concert composition |
The 17-string version, often just called the bass koto, owes much of its place in modern ensembles to Miyagi Michio's influence, filling out a register the standard thirteen strings simply can't reach.
A few well-known tunings
Rather than one universal scale, players choose from a handful of named tunings depending on the mood and repertoire of a piece:
- Hirajōshi — a spacious, pentatonic tuning with a slightly plaintive character.
- Kumoi — a related mode with a darker, more melancholic colour.
- Akebono — an open, pentatonic tuning often associated with a brighter mood.
The exact notes each tuning produces depend on where the player sets the reference pitch, so two "hirajōshi" set-ups can still sound a tone or two apart — it's the pattern of intervals that stays constant, not a fixed set of letter names.
Where to go from here
If this has left you curious about actually owning one, our buyer's guide covers what to look for in size, materials and condition, and our beginner's guide is a gentler place to start if you're picking one up for the very first time.
The bottom line
A koto rewards patience more than almost any instrument I can think of. It looks plain, it demands you learn to retune it before you play a single piece, and its history stretches back through court music, chamber ensembles and a twentieth-century reinvention that's still shaping how it's played today. Sit with it a while, and that plain plank of paulownia starts to feel like one of the most thoughtfully engineered instruments in the world.
Comments