Bb7#5 Guitar Chord | Play, Hear and Master Interactively
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The Bb augmented seventh chord (Bb7#5) combines Bb, D, F# and Ab, that is the root, major third, raised fifth and minor seventh.
The Bb whole-tone scale contains all four chord tones, which makes it a reliable scale for soloing over Bb7#5. The listed voicings run from fret 1 up to fret 12. A raised fifth leans upward, which gives the chord a bright but unsettled colour.
The major third sits exactly halfway between the root and the raised fifth, each step being four semitones. Press play in the chord player at the top of the page to hear Bb7#5 strummed, then picked as an arpeggio.
Bb dominant 7th with sharp 5th guitar chord is also written as Bb7(#5), Bb7#5, Bb7+5 or Bbaug7.
Notes in the Bb 7(#5) chord:
Chord Structure:
Formula: 1 3 #5 b7
Bb 7(#5) Guitar Chord Diagrams
Position 1 Barre Movable
Finger Positions
- Mute the low E string
- Place your index finger (1) on the fret 1 of the A and G strings at the same time
- Place your middle finger (2) on the fret 2 of the high E string
- Place your ring finger (3) on the fret 3 of the B string
- Place your pinky finger (4) on the fret 4 of the D string
Position 2 Barre Movable
Finger Positions
- Mute the A string
- 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 7 of the B string
Position 3 Barre Movable
Finger Positions
- Mute the low E string
- Mute the high E string
- Place your index finger (1) on the fret 11 of the A, G and B strings at the same time
- Place your middle finger (2) on the fret 12 of the D string
Position 4 Barre Movable
Finger Positions
- Mute the low E string
- Mute the A string
- Place your index finger (1) on the fret 6 of the 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 7 of the B string
Position 5 Movable
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 7 of the G string
- Place your pinky finger (4) on the fret 7 of the B string
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Created by
Giancarlo is a musician (teaching guitar since 2000), software engineer, AI consultant and published researcher
FAQ
Which notes does Bb7#5 contain?
Bb7#5 has Bb, D, F# and Ab. Those are the root, a major third, a raised fifth and a minor seventh. D and F# are a major third apart.
What makes Bb augmented seventh different from Bb dominant seventh?
The fifth is raised. Bb7 has F, while Bb7#5 has F#. The major third D and minor seventh Ab are the same in both.
What does a dominant chord like Bb7#5 tend to do?
A dominant chord tends to sound as if it wants to resolve. Bb7#5 would naturally move down a fifth, to Eb. The raised fifth adds extra tension to that pull.
Which scale covers Bb7#5?
The Bb whole-tone scale, Bb, C, D, E, F#, Ab, includes all four chord tones. Use it when you improvise over the chord.
How many Bb7#5 voicings are there on guitar?
There are 5 voicings, 4 of them using a barre. None has an open string. They run from fret 1 to fret 12.
