Imaj7–vi7–ii7–V7 in B♭ Major

Pattern: Imaj7 – vi7 – ii7 – V7 Chords: Bbmaj7 – Gm7 – Cm7 – F7

Chord Breakdown

Numeral	Chord	Type	Function
Imaj7	Bbmaj7 (details)	major seventh	Tonic
vi7	Gm7 (details)	minor seventh	Submediant
ii7	Cm7 (details)	minor seventh	Supertonic
V7	F7 (details)	dominant seventh	Dominant

Harmonic Analysis

This progression moves through Bbmaj7 (Tonic) → Gm7 (Submediant) → Cm7 (Supertonic) → F7 (Dominant).

The standard I–vi–ii–V turnaround voiced with full seventh chords for authentic jazz color. The major seventh on I and the minor sevenths on vi and ii create rich voice-leading possibilities.

Song Examples

Blue Moon — Richard Rodgers
Sunday — Jule Styne

Chord Details

Bbmaj7 Gm7 Cm7 F7

More Progressions in B♭ 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