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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. 7

B♭ dominant 7th (B♭7)

B♭Root
DMaj 3
FPerf 5
A♭min 7

Bluesy and driving. The backbone of blues and jazz. Creates strong tension that resolves to the tonic (V7→I progression).

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

How to play it

EADGBe124312345

B♭7

B♭ dominant 7th, Open

Bass
B♭, the root
Root
B♭
Strings
A D G B e · open
  • B♭Root
  • DM3
  • FP5
  • A♭m7

Up the neck

6 voicings, same four notes

Why a dominant 7th chord sounds the way it does

B♭+4 fretsD+3 fretsF+3 fretsA♭

Stacked from 3 intervals. Compare with B♭maj7 →

04

Where to go next

More B♭ chords

Same root, other colours

B♭9B♭13B♭sus4B♭maj7

Chords in the key of B♭

What B♭7 usually sits next to

I · B♭ii · Cmiii · DmIV · E♭V · Fvi · Gmvii° · A°

Close relatives

Relatives of B♭ major

  • GmRelative minor of B♭ major
  • B♭mParallel minor, lower the 3rd

Other 7 chords

Same quality, every root

C7C♯7D7E♭7E7F7F♯7G7A♭7A7B♭7B7
01

Root

B♭
02

Quality

7

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

Why a dominant 7th chord sounds the way it does

B♭+4 fretsD+3 fretsF+3 fretsA♭

Stacked from 3 intervals. Compare with B♭maj7 →

03

How to play it

EADGBe124312345

B♭7

B♭ dominant 7th, Open

Bass
B♭, the root
Root
B♭
Strings
A D G B e · open
  • B♭Root
  • DM3
  • FP5
  • A♭m7

Up the neck

6 voicings, same four notes
04

Where to go next

More B♭ chords

Same root, other colours

B♭9B♭13B♭sus4B♭maj7

Chords in the key of B♭

What B♭7 usually sits next to

I · B♭ii · Cmiii · DmIV · E♭V · Fvi · Gmvii° · A°

Close relatives

Relatives of B♭ major

  • GmRelative minor of B♭ major
  • B♭mParallel minor, lower the 3rd

Other 7 chords

Same quality, every root

C7C♯7D7E♭7E7F7F♯7G7A♭7A7B♭7B7
B♭ dominant 7th