I–IV–I in A♭ Major
Pattern: I – IV – I
Chords: A♭ – D♭ – A♭
Chord Breakdown
| Numeral | Chord | Type | Function |
|---|---|---|---|
| I | A♭ (details) | major | Tonic |
| IV | D♭ (details) | major | Subdominant |
| I | A♭ (details) | major | Tonic |
Harmonic Analysis
This progression moves through A♭ (Tonic) → D♭ (Subdominant) → A♭ (Tonic).
The simplest folk progression, rocking between the tonic and subdominant. This two-chord motion evokes the drone-like quality of traditional folk instruments and open tunings.
Song Examples
- Blowin' in the Wind — Bob Dylan
- Skip to My Lou — Traditional