Scales and Keys · Lesson 5
Japanese and Asian Scales
about 15 min
What this lesson is for
Most traditional Japanese scales are pentatonic too, but they omit different notes, and that produces a completely different sound world from the Western pentatonic. This lesson compares the Yona-nuki, Ryukyu, and Miyako-bushi scales, and corrects a widespread misattribution along the way.
- Explain that the Yona-nuki scale is structurally identical to the major pentatonic
- Distinguish the Ryukyu and Miyako-bushi scales by where their half steps fall
- Explain that Miyako-bushi belongs to early-modern Japanese music rather than to gagaku
- Use "which notes were omitted" as a general axis for comparing scales
In this lesson
The previous lesson established that a pentatonic scale is a seven-note scale with two notes removed. This one asks what happens when you change which two you remove.
The answer is that the character changes dramatically. Japanese and other Asian scales have the same note count as the Western pentatonic but a different omission, and that alone puts them in a different world.
Yona-nuki — actually the same as the major pentatonic
The most widely known “Japanese-sounding” scale in Japan is the Yona-nuki scale. The name is literal bookkeeping: yo and na are the Japanese numerals four and seven, and nuki means omitted. It is the major scale with the fourth and seventh degrees taken out.
Something has to be said plainly here. These are exactly the notes of the major pentatonic — C D E G A, not one note different from the scale in the previous lesson.
So “Yona-nuki” is, structurally, a Japanese name for the major pentatonic. The common claim that a melody sounds Japanese because it is Yona-nuki does not survive contact with the structure. Scottish folk tunes and American folk songs use the identical scale.
Why, then, do Japanese school songs and children’s songs sound the way they do? Because of how the melody moves, its rhythm, and how it ends — not the scale. The general lesson is worth keeping: a scale does not determine a style.
One scale, two impressions
Check: Both use the same five notes, C D E G A. The first moves mostly by step; the second is full of fourths and fifths. The impression differs substantially even though the pitch material is identical, which is the point — scale is not style.
The Ryukyu scale — omit somewhere else
Take the same major scale and remove the second and sixth degrees instead. That gives C E F G B, the Ryukyu (Okinawan) scale. In Japanese it is sometimes called niro-nuki, by the same naming logic — ni and ro being two and six.
The decisive difference is that the half steps are still there. Yona-nuki removed the notes responsible for the half steps (degrees 4 and 7); Ryukyu keeps those and removes the notes that made no half step at all (degrees 2 and 6).
The result is a scale that contains E–F and B–C, and it has a bright, taut quality precisely because of them. The characteristic sound of Okinawan music comes from those surviving half steps.
Yona-nuki against Ryukyu
Check: Both are pentatonic scales on C, both derived from the same major scale. Only the omitted notes differ. Yona-nuki is smooth and even; Ryukyu is bright with an edge, because it kept its half steps. This pair is the cleanest demonstration that the choice of omission is what matters.
degrees 4 and 7 removed
Check
Where are the half steps in the Ryukyu scale on C?
Miyako-bushi — half steps in the opposite places
The other essential Japanese scale is Miyako-bushi, also known as the in mode.
On C it runs C D♭ F G A♭.
This scale also contains two half steps, but positioned opposite to Ryukyu’s.
| Scale | Half-step locations | Impression |
|---|---|---|
| Ryukyu | degrees 3–4 and 7–8 | bright, taut |
| Miyako-bushi | above the tonic and above the fifth | dark, tense |
Putting a half step immediately above the tonic is the same device as the ♭2 of Phrygian, from earlier in this unit. It produces both a strong pull toward the tonic and a persistent instability.
On attribution — Miyako-bushi is not a gagaku scale
A widespread error is worth correcting here. Miyako-bushi is often described as “the scale of gagaku” or “the ancient Japanese scale.” Neither is accurate.
Miyako-bushi (the in mode) belongs to the early-modern Japanese music of the Edo period onward — shamisen genres such as jiuta and nagauta, koto music, and shakuhachi repertoire.
Gagaku, by contrast, is court music that arrived from the Asian mainland during the Nara and Heian periods, and it operates on a separate theory of modes called ritsu and ryo. Different era, different performers, different modal system.
Lumping everything together as “traditional Japanese music” hides the fact that gagaku (ancient, courtly) and early-modern Japanese music (Edo, urban) are distinct musical cultures. Assigning Miyako-bushi to gagaku misplaces it by close to a thousand years.
The three Japanese scales in sequence
Check: Yona-nuki (no half steps, even), Ryukyu (half steps in the bright positions), Miyako-bushi (half steps in the dark positions). Notice how much variety is achievable under the same constraint of five notes — and that in Miyako-bushi it is the very first step, from note one to note two, that sets the tone.
Check
What interval separates the tonic from the second note of the Miyako-bushi scale?
Comparing scales by what they omit
The thing worth taking from this lesson is not the specific scales but the axis of comparison.
Within the single frame “a major scale with two notes removed,” there are three distinct strategies:
- eliminate the half steps → Yona-nuki (= major pentatonic)
- preserve the half steps → Ryukyu
- relocate half steps next to the tonic → Miyako-bushi
Each supports a different musical culture.
The same lens works on Arabic and Persian scales. Rather than memorizing scales as a list, organize them by where the half steps were placed, and the scales of the world start to fit on a single map.
Adjacent half steps create an augmented 2nd
Push the placement idea further and it extends to seven-note scales as well. Move two half steps close together and an augmented 2nd appears between them.
Earlier in this unit, the lesson on minor scales showed that harmonic minor has an augmented 2nd between degrees 6 and 7 (A♭–B in C). Some scales carry that structure deliberately, in two places at once.
| Scale | Spelled on C | Augmented 2nds |
|---|---|---|
| Harmonic minor | C D E♭ F G A♭ B | degrees 6–7 (A♭–B) |
| Hungarian minor | C D E♭ F♯ G A♭ B | degrees 3–4 (E♭–F♯) and 6–7 (A♭–B) |
| Double harmonic | C D♭ E F G A♭ B | degrees 2–3 (D♭–E) and 6–7 (A♭–B) |
Hungarian minor is associated with Eastern Europe, and double harmonic — also called the Arabic scale — with Middle Eastern and Spanish-influenced music. What makes them sound exotic is not the rarity of the scale but one interval, the augmented 2nd. The interval that minor-key part-writing avoids as unsingable is, in another tradition, the defining feature placed front and center.
One augmented 2nd, or two
Check: The first is harmonic minor, with a single augmented 2nd between degrees 6 and 7. Hungarian minor adds a second one between degrees 3 and 4, doubling the effect. Double harmonic also puts a half step directly above the tonic, adding tension of the kind heard in Miyako-bushi. Try counting the catches as they go by.
one augmented 2nd
Exercises
Every answer here is cross-checked against the theory engine. Work them out before you grade.
- 1
Spell the five notes of the C Yona-nuki scale from the bottom, using single spaces between names.
- 2
Spell the five notes of the C Ryukyu scale from the bottom, using single spaces between names.
- 3
Spell the five notes of the C Miyako-bushi scale from the bottom, using single spaces between names.
- 4
Which repertoire is the Miyako-bushi scale principally associated with?
- 5
The Ryukyu and Miyako-bushi scales are both pentatonic scales containing half steps. What is the decisive difference?
Before you move on
Check that you can explain each point above in your own words.
Sources
- Japan Arts Council Cultural Digital Library — For the place of the in and yo modes within early-modern Japanese music (jiuta, sokyoku, and nagauta). Japanese-language source
- In scale — Wikipedia — For the Miyako-bushi (in) scale as belonging to shamisen and koto music, and for its distinction from the scales of gagaku