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Sevenths

C minor-major 7th chord

Mysterious and cinematic — think spy-movie themes.

Notes: CE♭GB
Formula: 1♭357
Built from: root · minor 3rd · perfect 5th · major 7th

How to play Cm(maj7)

Cm(maj7) on guitar

x31003 · Open position

All 6 guitar shapes, tabs & fingering →

Cm(maj7) on piano

Right hand: C (1), E♭ (2), G (3), B (5)

Inversions, fingering & notation →

Cm(maj7) on ukulele

4333 · Barre · 3rd fret

All 6 ukulele shapes, tabs & fingering →

About the C minor-major 7th chord

Playing it

On guitar, Cm(maj7) has an open-position shape, x31003, using three fingers alongside the open strings. Don’t strum the low E string.

On piano, Cm(maj7) has one black key (E♭) and three white keys.

On ukulele the usual Cm(maj7) shape is 4333, with a small 3-string barre at the 3rd fret.

Related chords

Take away the root and the other three notes form E♭aug (E♭ G B) — so you can think of Cm(maj7) as E♭aug with C added underneath.

Move a single note and Cm(maj7) becomes a different chord: drop the B for Cm, raise E♭ to E for Cmaj7, lower B to B♭ for Cm7 and swap B for A for Cm6.