I–♭III–♭VII–IV in G Major

Pattern: I – ♭III – ♭VII – IV   Chords: G – B♭ – F – C

Chord Breakdown

NumeralChordTypeFunction
I G (details) major Tonic
♭III B♭ (details) major Mediant
♭VII F (details) major Subtonic
IV C (details) major Subdominant

Harmonic Analysis

This progression moves through G (Tonic) → B♭ (Mediant) → F (Subtonic) → C (Subdominant).

The I–♭III–♭VII–IV progression blends Mixolydian and Dorian borrowings into a four-chord rock loop. The ♭III and ♭VII add modal color while the IV provides a familiar landing point. This pattern is a staple of arena rock and jam-band music.

Song Examples

Chord Details

More Progressions in G Major