I–iii–IV–iv–V–I in G Major

Pattern: I – iii – IV – iv – V – I Chords: G – Bm – C – Cm – D – G

Chord Breakdown

Numeral	Chord	Type	Function
I	G (details)	major	Tonic
iii	Bm (details)	minor	Mediant
IV	C (details)	major	Subdominant
iv	Cm (details)	minor	Subdominant
V	D (details)	major	Dominant
I	G (details)	major	Tonic

Harmonic Analysis

This progression moves through G (Tonic) → Bm (Mediant) → C (Subdominant) → Cm (Subdominant) → D (Dominant) → G (Tonic).

The I–iii–IV–iv–V–I progression features a chromatic inner voice that descends through the IV-to-iv shift, creating a ♭ittersweet moment of modal mixture. This borrowed minor iv chord adds emotional depth to an otherwise diatonic progression. It is a hallmark of sophisticated pop songwriting.

Song Examples

Creep — Radiohead
Space Oddity — David Bowie

Chord Details

G Bm C Cm D

More Progressions in G 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