I–IV–I in E♭ Major

Pattern: I – IV – I Chords: E♭ – A♭ – E♭

Chord Breakdown

Numeral	Chord	Type	Function
I	E♭ (details)	major	Tonic
IV	A♭ (details)	major	Subdominant
I	E♭ (details)	major	Tonic

Harmonic Analysis

This progression moves through E♭ (Tonic) → A♭ (Subdominant) → E♭ (Tonic).

The simplest blues motion: tonic to subdominant and back. This two-chord movement captures the essential blues sound and forms the core of countless blues riffs and vamps.

Song Examples

Catfish Blues — Muddy Waters
Dust My Broom — Elmore James

Chord Details

E♭ A♭

More Progressions in E♭ Major

I–IV–V–I I–V–vi–IV I–vi–IV–V ii–V–I I–IV–V I–♭VII–IV vi–IV–I–V I–V–vi–iii–IV–I–IV–V I–IV I–V IV–V IV–I