B Flat 7 Guitar Chord | Play, Hear and Master it Interactively
Here for B dominant seventh rather than Bb7? The B7 page covers it.
Bb7 is the Bb dominant seventh chord, spelled Bb, D, F and Ab. It has the same sound as A#7, but Bb is the spelling that belongs to flat keys.
Sixteen voicings are listed: six barres, one open-string shape and the lowest fret at the 1st. As V7 in Eb major, the chord wants to move to Eb. For cleaner moves between the barres, see smoother chord changes. The Bb Mixolydian scale contains every chord note.
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Bb dominant 7th guitar chord is also written as Bb7, Bbdom7 or Bbdom.
Bb7 Chord Notes and Formula
Bb 7 chord Notes:
How the Dominant Seventh chord is built:
Formula: 1 3 5 b7
Same chord, different name: Bb7 is also written as A#7 (A# dominant seventh).
Bb7 Chord Interactive Fretboard
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Bb7 Guitar Chord Diagrams
Position 1 Barre Movable
Bb Dominant Seventh Finger Positions
- Mute the low E string
- Place your index finger (1) on the fret 1 of the A, G and high E strings at the same time
- Place your ring finger (3) on the fret 3 of the D string
- Place your pinky finger (4) on the fret 3 of the B string
Position 2 Barre Movable
Bb Dominant Seventh Finger Positions
- Place your index finger (1) on the fret 6 of the low E, D and high E strings at the same time
- Place your middle finger (2) on the fret 7 of the G string
- Place your ring finger (3) on the fret 8 of the A string
- Place your pinky finger (4) on the fret 9 of the B string
Position 3 Movable
Bb Dominant Seventh Finger Positions
- Mute the low E string
- Mute the A string
- Place your index finger (1) on the fret 8 of the D string
- Place your middle finger (2) on the fret 9 of the B string
- Place your ring finger (3) on the fret 10 of the G string
- Place your pinky finger (4) on the fret 10 of the high E string
Position 4 Barre Movable
Bb Dominant Seventh Finger Positions
- Place your index finger (1) on the fret 6 of the low E, D, B and high E strings at the same time
- Place your middle finger (2) on the fret 7 of the G string
- Place your ring finger (3) on the fret 8 of the A string
Position 5 Movable Slash Chord
Bb/Ab Dominant Seventh Finger Positions
- Mute the low E string
- Mute the A string
- Mute the high E string
- Place your index finger (1) on the fret 6 of the D string
- Place your middle finger (2) on the fret 6 of the B string
- Place your ring finger (3) on the fret 7 of the G string
The lowest note is Ab, not the root, so this voicing is the slash chord Bb7/Ab.
Position 6 Barre Movable Slash Chord
Bb/F Dominant Seventh Finger Positions
- Mute the low E string
- Mute the A string
- Place your index finger (1) on the fret 3 of the D, G and B strings at the same time
- Place your ring finger (3) on the fret 4 of the high E string
The lowest note is F, not the root, so this voicing is the slash chord Bb7/F.
Position 7 Movable
Bb Dominant Seventh Finger Positions
- Mute the A string
- Mute the B string
- Mute the high E string
- Place your index finger (1) on the fret 6 of the low E string
- Place your middle finger (2) on the fret 6 of the D string
- Place your ring finger (3) on the fret 7 of the G string
Position 8 Open
Bb Dominant Seventh Finger Positions
- Mute the low E string
- Let the D string play without pressing any fret
- Mute the B string
- Mute the high E string
- Place your middle finger (2) on the fret 1 of the A string
- Place your ring finger (3) on the fret 1 of the G string
Position 9 Movable Slash Chord
Bb/D Dominant Seventh Finger Positions
- Mute the low E string
- Mute the A string
- Mute the D string
- Place your index finger (1) on the fret 4 of the high E string
- Place your middle finger (2) on the fret 6 of the B string
- Place your ring finger (3) on the fret 7 of the G string
The lowest note is D, not the root, so this voicing is the slash chord Bb7/D.
Position 10 Movable Slash Chord
Bb/D Dominant Seventh Finger Positions
- Mute the low E string
- Mute the A string
- Mute the D string
- Mute the high E string
- Place your index finger (1) on the fret 7 of the G string
- Place your pinky finger (4) on the fret 9 of the B string
The lowest note is D, not the root, so this voicing is the slash chord Bb7/D.
Position 11 Movable Slash Chord
Bb/F Dominant Seventh Finger Positions
- Mute the low E string
- Mute the A string
- Mute the D string
- Place your index finger (1) on the fret 9 of the B string
- Place your middle finger (2) on the fret 10 of the G string
- Place your ring finger (3) on the fret 10 of the high E string
The lowest note is F, not the root, so this voicing is the slash chord Bb7/F.
Position 12 Movable
Bb Dominant Seventh Finger Positions
- Mute the A string
- Mute the high E string
- Place your index finger (1) on the fret 6 of the low E string
- Place your middle finger (2) on the fret 6 of the D string
- Place your ring finger (3) on the fret 6 of the B string
- Place your pinky finger (4) on the fret 7 of the G string
Position 13 Barre Movable Slash Chord
Bb/Ab Dominant Seventh Finger Positions
- Mute the low E string
- Mute the A string
- Place your index finger (1) on the fret 6 of the D, B and high E strings at the same time
- Place your middle finger (2) on the fret 7 of the G string
The lowest note is Ab, not the root, so this voicing is the slash chord Bb7/Ab.
Position 14 Movable
Bb Dominant Seventh Finger Positions
- Mute the low E string
- Mute the B string
- Mute the high E string
- Place your index finger (1) on the fret 12 of the D string
- Place your middle finger (2) on the fret 13 of the A string
- Place your ring finger (3) on the fret 13 of the G string
Position 15 Barre Movable
Bb Dominant Seventh Finger Positions
- Mute the low E string
- Mute the A string
- Mute the D string
- Place your index finger (1) on the fret 3 of the G and B strings at the same time
- Place your middle finger (2) on the fret 4 of the high E string
Position 16 Movable Slash Chord
Bb/D Dominant Seventh Finger Positions
- Mute the low E string
- Mute the A string
- Mute the D string
- Place your index finger (1) on the fret 6 of the high E string
- Place your middle finger (2) on the fret 7 of the G string
- Place your pinky finger (4) on the fret 9 of the B string
The lowest note is D, not the root, so this voicing is the slash chord Bb7/D.
Find more shapes in our all guitar chords online library. If you
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Chords That Go With Bb7
One key where Bb7 fits is Eb major, where it works as the V chord. These are the main chords of that key, the ones you will often hear around it:
See every key in the guitar keys chart, or build a progression with these chords in the chord progression generator.
More Bb Chords
Want to know how this chord is built? Read dominant chords explained, or browse all Bb guitar chords.
Created by
Giancarlo is a musician (teaching guitar since 2000), software engineer, AI consultant and published researcher
FAQ
Which notes make up the Bb7 chord?
Bb, D, F and Ab. The D is the major third, the F the perfect fifth and the Ab the minor seventh over the root.
In what key is Bb7 the V7 chord?
Bb7 is the V7 chord of Eb major. Ab, its minor seventh, is the fourth degree of Eb major, and the chord leads naturally to Eb.
How does Bb7 differ from a Bb major triad?
A Bb major triad is Bb, D and F. Bb7 adds Ab, which sits a minor seventh over the root and gives the chord its tension.
Can Bb dominant seventh be written as A#7?
Yes, A#7 is the enharmonic spelling, with A#, C##, E# and G#. The pitches are the same, but Bb7 is simpler to read because it has no double sharp.
How many Bb7 voicings are there?
There are 16 voicings, between fret 1 and fret 13. One has an open string and six are barre voicings.
