I–♭VII–I in C Major
Pattern: I – ♭VII – I
Chords: C – B♭ – C
Chord Breakdown
| Numeral | Chord | Type | Function |
|---|---|---|---|
| I | C (details) | major | Tonic |
| ♭VII | B♭ (details) | major | Subtonic |
| I | C (details) | major | Tonic |
Harmonic Analysis
This progression moves through C (Tonic) → B♭ (Subtonic) → C (Tonic).
Using the flat seventh chord borrowed from the Mixolydian mode, this progression creates a gritty, bluesy slide effect. The ♭VII adds a raw, rebellious quality that defines blues rock.
Song Examples
- Sympathy for the Devil — The Rolling Stones
- Whole Lotta Love — Led Zeppelin