I7–IV7–V7 in A♭ Major

Pattern: I7 – IV7 – V7 Chords: A♭7 – D♭7 – E♭7

Chord Breakdown

Numeral	Chord	Type	Function
I7	A♭7 (details)	dominant seventh	Tonic
IV7	D♭7 (details)	dominant seventh	Subdominant
V7	E♭7 (details)	dominant seventh	Dominant

Harmonic Analysis

This progression moves through A♭7 (Tonic) → D♭7 (Subdominant) → E♭7 (Dominant).

Using all dominant seventh chords, this three-chord progression is the harmonic DNA of the blues. The seventh chords add grit and tension that define the blues sound.

Song Examples

Stormy Monday — T-Bone Walker
The Thrill Is Gone — B.B. King

Chord Details

A♭7 D♭7 E♭7

More Progressions in A♭ 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