Standard Progressions
The workhorses of popular music · I–IV–V–I · I–V–vi–IV · I–vi–IV–V
A small handful of chord progressions account for an enormous share of Western popular music. The Axis (I–V–vi–IV), the 50s doo-wop changes (I–vi–IV–V), the three-chord I–IV–V, and Pachelbel's descending eight-bar loop together underpin thousands of songs across rock, pop, country, soul, gospel, folk, and film score. Learning these five or six shapes gives you the harmonic vocabulary to recognize, transpose, and improvise over most of the music you have ever heard on the radio.
The Axis Progression — I, V, vi, IV
Four chords behind hundreds of hits, from "Let It Be" to "Don't Stop Believin'". Try it in any key and notice how immediately recognizable the shape becomes.
Toggle voice leading in the player to hear it smooth out, or learn voice leading →
The vivid pop red palette on this page is inspired by music-color synesthesia — standard progressions maps to vivid pop red, reflecting its bright, immediate, everywhere-at-once character.
About Standard Progressions
The reason these progressions are "standard" is that they balance two pulls. They sit firmly inside a single key (which makes them easy to sing over and easy to play in a band), but they include enough harmonic motion to feel like they are going somewhere. The Axis (I–V–vi–IV) is the cleanest example: every chord is diatonic, the bass line steps in a memorable contour, and the loop can repeat without the music ever feeling stuck in one place. That is why it has been used in more hits since 1990 than any other four-chord pattern.
The 50s doo-wop progression (I–vi–IV–V) is the older cousin. It does the same job — diatonic loop around tonic — but it puts the minor vi chord second and saves the V for last, which produces a steadier rocking feel suited to slow-dance ballads. "Stand By Me", "Earth Angel", "Heart and Soul", and "Blue Moon" all sit on this shape. The three-chord I–IV–V is even older and even simpler: it is the backbone of folk, blues, country, and early rock, where most songs cycle through just those three chords for the entire piece.
Pachelbel's eight-chord descending loop is the wild card. Unlike the others, it has a clear descending-bass contour (I, V, vi, iii, IV, I, IV, V) that produces a feeling of cascading motion. That contour has been borrowed everywhere — Green Day's "Basket Case", Vitamin C's "Graduation", Aerosmith's "Cryin'", and most of the wedding-recessional repertoire — because the steady downward bass under repeated upper voices is intrinsically satisfying to the ear. Knowing these four families (Axis, doo-wop, I–IV–V, Pachelbel) means roughly 70% of pop, rock, and folk songs decode instantly.
Variations
I – IV – V – I (the three-chord skeleton)
The oldest and simplest standard progression — the entire harmonic content of folk, country, and most early rock.
Axis rotation — vi, IV, I, V
The same four chords as the Axis, started on vi. Aerosmith's "Cryin'" and the Backstreet Boys' "I Want It That Way".
Doo-Wop — I, vi, IV, V
The 50s changes. Saves the V for last, which gives a steadier, more rocking rhythm.
Pachelbel — I, V, vi, iii, IV, I, IV, V
Eight chords with a descending-bass contour. Borrowed everywhere from Green Day to wedding processionals.
I – IV – V – IV
The looping three-chord rock-and-roll vamp behind "La Bamba" and "Twist and Shout".
Famous songs & pieces
- Let It Be — The Beatles (I – V – vi – IV (Axis))
- Don't Stop Believin' — Journey (I – V – vi – IV (Axis))
- Stand By Me — Ben E. King (I – vi – IV – V (doo-wop))
- La Bamba — Ritchie Valens (I – IV – V looped)
- Canon in D — Johann Pachelbel (I – V – vi – iii – IV – I – IV – V (Pachelbel))
- No Woman No Cry — Bob Marley (I – V – vi – IV (Axis))