vii°–I in A♭ Major

Pattern: vii° – I Chords: Gdim – A♭

Chord Breakdown

Numeral	Chord	Type	Function
vii°	Gdim (details)	diminished	Subtonic
I	A♭ (details)	major	Tonic

Harmonic Analysis

This progression moves through Gdim (Subtonic) → A♭ (Tonic).

The vii°–I progression features the diminished triad built on the leading tone resolving directly to the tonic. The diminished chord's inherent instability — caused by its tritone between root and flat fifth — creates powerful tension that demands resolution. It functions similarly to V–I but with even more urgency, and is a staple of classical part-writing and jazz voice leading.

Song Examples

Prelude in C Major — J.S. Bach
Killing Me Softly — Roberta Flack
Moonlight Sonata — Beethoven

Chord Details

Gdim A♭

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

Related Progressions

V–I viidim7–I viihd7–I