The Beatles · from Abbey Road (1969)
A study in secondary-dominant motion. The bright music-hall surface runs on a chain of dominant-function chords that pull around the circle of fifths, the harmonic engine behind the whole vaudeville style.
This song is in a bright, happy home key called D major.
The chords march around in a circle, and each chord points hard at the next one, like stepping stones you cannot help but follow.
Chords that point at the next chord instead of home are called secondary dominants. They are the trick that makes old theater songs feel bouncy.
Every phrase ends with a strong, clear finish.
A finish like that is called a cadence, the musical way of ending a sentence.
The lesson: tidy chords that all point forward, one to the next, give the song its wind-up-toy, sing-along feel.
To see the exact chords and key, open Pollack or Isophonics.
Musicians sometimes name chords with numbers instead of letters, so 1 is the home chord and 5 is the strong one that pulls back home.
That number way of writing chords is called the Nashville number system.
The song stays firmly in a major key and stays mostly diatonic, which is why it reads as sunny and tidy.
There is no blues ambiguity here: the tonic is stable and clearly established, and the whole style depends on that clarity so the harmonic detours have a home to leave from and return to.
The verse runs on chained dominant-function chords that resolve down a fifth into one another, tonicizing scale degrees on the way.
That circle-of-fifths chain of secondary dominants is the defining harmonic signature of the ragtime and music-hall style the song imitates.
It is the single most important thing to hear.
Confirm the exact chord chain and its Roman-numeral reading at Isophonics and BeatlesFC.
Because each dominant points strongly at its target, the phrases resolve to firm perfect-authentic cadences.
The style lives or dies on tidy V–I closure, and this song pushes into that squareness rather than hiding it.
Track how definite each phrase-ending feels compared with the softer, half-open endings of the band’s more introspective songs.
The contrasting section moves the harmony to a fresh area before steering back to the home key, giving the ear a break from the circling verse motion.
Hearing where the tonal center relocates and how the song returns is the structural payoff.
Confirm the exact chords of the shift at Pollack.
The melody is diatonic and phrase-symmetrical, often echoing the harmonic sequence as the chords step around the circle.
The form is a straightforward strophic verse-and-refrain with the contrasting middle.
Everything is deliberately regular, which is exactly what makes the style feel like a wind-up music box.
| Degree | Chord | Nashville | Roman |
|---|---|---|---|
| 1 | D | 1 | I |
| 2 | Em | 2m | ii |
| 3 | F#m | 3m | iii |
| 4 | G | 4 | IV |
| 5 | A | 5 | V |
| 6 | Bm | 6m | vi |
| 7 | C#° | 7° | vii° |
Reference chart in D major. The verse is the ragtime secondary-dominant chain.
Reading the numbers: each is a scale degree in D major. Plain = major, m = minor, ° = diminished, (7) = a dominant-seventh coloring, b-degrees are chromatic steps.
The three secondary dominants from the chain, as guitar shapes.
Prose analysis of the key, the secondary-dominant chain, the cadences, and the contrasting section.
Open Pollack mirror →Downloadable chord, key, and segment files: the exact chord chain and where each section begins.
Open Isophonics →Roman-numeral function and melody in relative notation, if a community tab exists.
Open the Beatles index →Tonic, predominant, and dominant labels on the Isophonics chords at phrase level, which reads the secondary dominants directly.
Open the paper →