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An interactive reference for guitar chord shapes, voicings and the theory behind them.

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  1. Chords
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  3. B♭
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  5. mM7

B♭ minor/major 7th (B♭mM7)

B♭Root
D♭min 3
FPerf 5
AMaj 7

Dark and dramatic. Minor triad with major 7th. Used in jazz and film scores for tension and sophistication.

Notes
B♭D♭FA
Formula
1 · ♭3 · 5 · 7
Type
Seventh chord
03

How to play it

EADGBe1423112345

B♭mM7

B♭ minor/major 7th, 1fr

Bass
B♭, the root
Root
B♭
Strings
A D G B e · 1st fret
  • B♭Root
  • D♭m3
  • FP5
  • AM7

Up the neck

6 voicings, same four notes

Why a minor/major 7th chord sounds the way it does

B♭+3 fretsD♭+4 fretsF+4 fretsA

Stacked from 3 intervals.

04

Where to go next

More B♭ chords

Same root, other colours

B♭m7B♭m9B♭m6B♭m11

Chords in the key of B♭ minor

What B♭mM7 usually sits next to

i · B♭mii° · C°III · D♭iv · E♭mv · FmVI · G♭VII · A♭

Close relatives

Relatives of B♭ minor

  • D♭Relative major of B♭ minor
  • B♭Parallel major, raise the 3rd

Other mM7 chords

Same quality, every root

CmM7C♯mM7DmM7E♭mM7EmM7FmM7F♯mM7GmM7A♭mM7AmM7B♭mM7BmM7
01

Root

B♭
02

Quality

mM7

4 notes: a triad plus a 7th. Jazzier, wants to move.

Alterations need a 7th chord. Try B♭7 →

Why a minor/major 7th chord sounds the way it does

B♭+3 fretsD♭+4 fretsF+4 fretsA

Stacked from 3 intervals.

03

How to play it

EADGBe1423112345

B♭mM7

B♭ minor/major 7th, 1fr

Bass
B♭, the root
Root
B♭
Strings
A D G B e · 1st fret
  • B♭Root
  • D♭m3
  • FP5
  • AM7

Up the neck

6 voicings, same four notes
04

Where to go next

More B♭ chords

Same root, other colours

B♭m7B♭m9B♭m6B♭m11

Chords in the key of B♭ minor

What B♭mM7 usually sits next to

i · B♭mii° · C°III · D♭iv · E♭mv · FmVI · G♭VII · A♭

Close relatives

Relatives of B♭ minor

  • D♭Relative major of B♭ minor
  • B♭Parallel major, raise the 3rd

Other mM7 chords

Same quality, every root

CmM7C♯mM7DmM7E♭mM7EmM7FmM7F♯mM7GmM7A♭mM7AmM7B♭mM7BmM7
B♭ minor/major 7th