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Progression · Pop

1-6-4-5 Chord Progression (I–vi–IV–V)

The 1950s progression — four chords that carried doo-wop, early rock and roll, and countless ballads since.

The Progression

Key of C major
Key
IviIVV
I C → vi Am → IV F → V G

Why It Works

Hear It Played Through

Load the whole progression into the Studio.

Drop I–vi–IV–V straight into the interactive looper, hit play, and hear the full sequence cycle.

Play I–vi–IV–V in the Studio →

Questions about the I–vi–IV–V progression

Why is this called the 50s progression?

Because it defined the ballads and doo-wop records of the 1950s, where vocal groups stacked harmonies over this exact loop. It never went away — pop, rock, and R&B songs have used the same four chords in every decade since, usually in the same order.

How is 1-6-4-5 different from 1-5-6-4?

Same four chords, different order. Here the minor chord comes second, right after the tonic, so the loop dips into shadow early and then brightens through IV and V. In 1-5-6-4 the minor chord lands third, after the V, which feels more like a delayed turn.

What key is this progression in?

C major. C is the I, Am is the vi (the relative minor), F is the IV, and G is the V. Because all four chords belong to C major, you can play any C major scale idea over the whole loop without changing position.

Related progressions & chords

I–V–vi–IVPopI–IV–vi–VPop CChordAmChordFChordGChord