The Royal Road Progression: Japan's Signature Chord Progression

What Is the Royal Road Progression?

The Royal Road progression is a four-chord sequence built on the fourth, fifth, third and sixth degrees of a major key: IV – V – iii – vi. In C major that is F – G – Em – Am. In practice it is usually played with seventh chords, which gives it its characteristic warmth: Fmaj7 – G7 – Em7 – Am7.

Japanese musicians call it the ōdō shinkō (王道進行), which translates directly as "royal road progression". The image is of a broad, paved imperial road: a path that has been travelled so often that it has become the standard route. That is exactly the role the progression plays in modern Japanese music. It is central to J-pop, city pop and J-rock, and it is one of the first things a composer needs to know when writing in the style of anime or JRPG soundtracks.

A quick way to hear it: play the four chords as a loop on the piano. The progression never lands on the tonic chord, so it feels as if it is always about to arrive somewhere without quite settling. That quality is the point.

Why It Sounds So Japanese

Nothing about the individual chords is unusual. IV, V, iii and vi are all diatonic, and Western pop uses all four constantly. What makes the Royal Road distinctive is the order.

• It starts on IV, not I. Most Western pop progressions begin on the tonic. Starting on the subdominant means the listener is dropped into the middle of a harmonic sentence, which creates immediate forward motion.
• IV–V promises the tonic, then iii arrives instead. After IV and V the ear expects I. The iii chord shares two of its three notes with I and can stand in for it, but it is minor, so the expected arrival is softened into something more wistful.
• iii–vi completes the turn into the relative minor. The final chord is vi, the relative minor of the key. The progression therefore moves from a bright subdominant opening to a minor conclusion within four chords, and because it never states I, it can loop indefinitely.

This combination of brightness, deferred resolution and a minor landing is a large part of why the progression reads as emotional and slightly melancholic even at fast tempos. With seventh chords on every step, the jazz influence that runs through so much Japanese popular music becomes audible as well.

The Standard Version and the ii–V–I Ending

Three other progressions sit alongside the Royal Road in defining the modern Japanese sound: the Seal progression, diatonic walks and the Nichijou progression. Of the four, the Royal Road is probably the most commonly used.

A useful reference version adds a ii–V–I cadence at the end. In C major:

F – G – Em – Am – Dm – G – C (IV – V – iii – vi – ii – V – I)

The ii–V–I tail gives the loop a proper landing point when you want one, and Royal Road straight into a ii–V–I is very typical of the genre. Many Japanese songs use exactly this shape: four chords of Royal Road, then a cadence home.

The Legend of Otoe: Composing Music for Anime and JRPGs Royal Road, Seal and Nichijou progressions, taught through an original story and finished with your own score in the style. Explore the course

How Japanese Composers Modify the Royal Road

Here is where the progression becomes interesting. There are enough variations available that you never really need to play the plain version again, and we recommend that you don't.

The modifications fall into a few families.

1. Inversions and functional substitution

The simplest changes keep the harmony but alter the bass line or swap a chord for one with the same function. Inversions give the progression a smoother, more melodic bass, and functional substitution replaces a chord with another that does the same job, such as exchanging the iii for another tonic-function chord.

2. Secondary dominants

A very common change is to turn the iii chord into a major chord. In C major, Em becomes E major, which is the dominant of vi (V/vi). The result is F – G – E – Am: the E pulls hard into the A minor that follows. Strictly speaking this is no longer the standard Royal Road, since the third chord is usually minor, but it is one of the most common ways to play it.

The same principle can be applied elsewhere. At the end of the ii–V–I version, the C major tonic can be turned into a C7, which is V/IV, so that the progression loops back to F with extra pull.

3. Tonicizing the iii chord with a half-diminished chord

A more advanced option comes from the Lydian mode. The raised fourth degree of the key can support a half-diminished chord, #iv ø7, which in C major is F#m7♭5. In the context of a Royal Road progression, this chord can replace the IV and act as the ii of E minor, so that F#m7♭5 – (B7) – Em tonicizes the iii chord instead of simply arriving at it. The progression gains a small internal cadence and a much more sophisticated colour.

4. Borrowed chords

Once you know borrowed chords, any step of the progression can take colour from the parallel minor or from another mode. In practice the plain triads get replaced by altered dominants, sevenths with extensions and chords borrowed from outside the key, while the underlying shape of the Royal Road stays recognisable.

5. Tritone substitution and altered dominants

The dominant chords in the progression, the V and any secondary dominants, can be replaced by their tritone substitutes or sharpened with alterations. Once the basic version is solid, tritone substitution and altered dominants are standard tools.

6. The diminished-seventh variant

A related sound uses a fully diminished seventh chord in place of a dominant to increase tension. This variant is familiar from Zelda's Lullaby, which uses it in the key of G. The choice here is less about the Roman numeral than about the voice leading.

The Legend of Otoe: Levels 2 & 3 Borrowed chords, modal writing and a full lesson on Royal Road modifications, continuing into non-functional harmony in Level 3. Explore the course

The Royal Road in Anime Openings

Anime opening themes are a special case, and they explain why the modifications matter. An opening is short, fast and has to hold attention for ninety seconds. At higher tempos a song simply needs a larger raw number of chords to stay interesting, which is why the modified versions of the Royal Road are heard so often in upbeat Japanese pieces.

Three habits are worth knowing:

• Abbreviating the progression. A song does not need all four chords. Opening with IV – iii – vi, an abbreviation of the Royal Road, and then moving on to a Seal progression (IV – V – VI) is a common shape.
• Starting somewhere else and ending on the Royal Road. In more ambitious writing, the Royal Road is often not the main idea. A piece begins with a different progression, such as the Loon progression, and then closes with the Royal Road to acknowledge the tradition.
• Building a unique gesture, then closing with IV–V–vi. A phrase can start on the ii chord with a ii – iii – vi gesture that belongs to that song alone, and then use the Royal Road shape to close. The progression becomes a shared cadence rather than the whole song.

This is a useful way to think about the Royal Road in general. It is so well known that using it unaltered can sound generic. Using it as a destination, a closing gesture or a heavily decorated version of itself keeps the recognisable sound while giving the song its own identity.

How to Use the Royal Road Progression in Your Own Music

1. Start with the plain triads. Play IV – V – iii – vi in a comfortable key and loop it until the shape is in your ear. In C major: F – G – Em – Am.
2. Add sevenths. Fmaj7 – G7 – Em7 – Am7 is the version most Japanese songs actually use. Notice how much warmer and more jazz-influenced it sounds.
3. Decide how the loop ends. Either let it cycle back to IV, or add the ii – V – I tail (Dm – G – C) when you want a real arrival.
4. Choose one or two modifications. Turn iii into a major chord for extra pull into vi, replace the IV with #iv ø7 to tonicize the iii, or alter one of the dominants. One change at a time is enough; the goal is a fresh version, not an unrecognisable one.
5. Check the voice leading. The modifications are less about the Roman numeral than about how the voices move. If a substitution creates awkward leaps, re-voice it.
6. Write the melody in the style. Japanese melodies often sit on colourful extensions over these chords and use parallel fourths and fifths for the characteristic sound. Those techniques are covered in Level 2 of The Legend of Otoe.

Related Japanese Chord Progressions

The Royal Road is one of a family of progressions that together define the modern Japanese sound. Four are worth knowing from the start, and three more once borrowed chords are part of your vocabulary:

• Seal progression (IV – V – VI): a close relative that skips the iii and walks up from IV to a major VI chord. The listener expects the minor vi; the major VI is technically outside the key, and that surprise is exactly what gives the progression its lift.
• Diatonic walks: walking up or down the scale with diatonic chords, such as IV – V – vi, ii – iii – IV or IV – iii – ii – I. The Seal progression is one member of this family. Progressions like this are always safe to write, and they become considerably more colourful once sevenths are added to every chord.
• Nichijou progression: the most involved of the four, named after its prominent use in the opening song of the anime Nichijou and mainly heard in J-pop. It starts on I, tonicizes vi and then IV with secondary dominants, walks down diatonically to ii, and closes with a ii – V – I back to I. In total it contains three ii – V motions, which is why it responds so well to jazz-style treatment.
• Mario cadence, Evangelion and Loon progressions: three further named progressions that build on borrowed chords.

A broader introduction to how these progressions fit alongside Western harmony, including the Royal Road in context, is in our complete guide to chord progressions for composers.