I–♭II–♭VII–I in A♭ Major
Pattern: I – ♭II – ♭VII – I
Chords: A♭ – A – G♭ – A♭
Chord Breakdown
| Numeral | Chord | Type | Function |
|---|---|---|---|
| I | A♭ (details) | major | Tonic |
| ♭II | A (details) | major | Supertonic |
| ♭VII | G♭ (details) | major | Subtonic |
| I | A♭ (details) | major | Tonic |
Harmonic Analysis
This progression moves through A♭ (Tonic) → A (Supertonic) → G♭ (Subtonic) → A♭ (Tonic).
The I–♭II–♭VII–I progression borrows the exotic ♭II from Phrygian mode, creating a stark chromatic contrast against the major tonic. The ♭VII then provides a familiar stepping stone back to I. This pattern evokes Middle Eastern and Spanish flavors in a rock context.
Song Examples
- Kashmir — Led Zeppelin
- Wherever I May Roam — Metallica