PROGRESSION · I–V–vi–IV
The Axis Progression
The most-used four bars in modern pop. Tonic, dominant, relative minor, subdominant — every function the key has, in one loop. Also called the four chord song, or the axis of awesome.
In C major
C – G – Am – F — bright, anthemic, inevitable, around 100 BPM.
Why it works
It works because it touches all three harmonic functions and then refuses to close. V wants to resolve to I, but the loop hands it vi instead — the relative minor, which shares two notes with I and acts as a soft substitute. The ear hears the resolution it expected and simultaneously notices it did not get it. IV then pulls back to I and the whole thing restarts, so the progression never lands.
Where you'll hear it
Best when the melody carries the song and the harmony just needs to hold it up. Because it never truly cadences, it loops for four minutes without fatigue — which is exactly why so many choruses are built on it.
I–V–vi–IV in every key
The same progression transposed. The roman numerals never change — that is the whole point of writing progressions this way.
| Key | I | V | vi | IV |
|---|---|---|---|---|
| C | C | G | Am | F |
| Db | Db | Ab | Bbm | Gb |
| D | D | A | Bm | G |
| Eb | Eb | Bb | Cm | Ab |
| E | E | B | C#m | A |
| F | F | C | Dm | Bb |
| F# | F# | C# | D#m | B |
| G | G | D | Em | C |
| Ab | Ab | Eb | Fm | Db |
| A | A | E | F#m | D |
| Bb | Bb | F | Gm | Eb |
| B | B | F# | G#m | E |
Related progressions
Drill the chords behind I–V–vi–IV
Build every chord in this progression from its symbol, against the clock.
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