A#/Bb7(b5,b9) guitar chord (A#/Bb Dominant 7th, Flat 5th, Flat 9th)

Symbols: 7(b5,b9), 7(-5,-9)

Steps: 1-3-b5-b7-b9

Notes: A#-D-E-Ab-B

The A#/Bb 7(b5,b9) chord combines a flat fifth and a flat ninth to the dominant seventh, resulting in a highly dissonant and dramatic sound. Its notes A#, D, E, Ab and B are often used in jazz to heighten emotional tension. Below, you'll find two variations how to play the "A#/Bb 7(b5,b9)" chord, each featuring finger placements and an audio sample.

Variation 1
A#/Bb7(b5,b9) guitar chord - variation 1
  • Position your middle finger on the B (2nd) string at the 5th fret and press down
  • With your index finger, press down on the G (3rd) string at the 4th fret
  • Use your pinky to press the D (4th) string down on the 6th fret
  • Press down on the low E (6th) string at the 6th fret using your ring finger
  • Now, strum all the strings up to the 2nd string, mute the 5th string

Variation 2
A#/Bb7(b5,b9) guitar chord - variation 2
  • Apply a barre with your index finger across the 12th fret, covering the 1st to the 4th strings
  • Use your ring finger to press the G (3rd) string down on the 13th fret
  • Press down on the A (5th) string at the 13th fret using your middle finger
  • Now, strum all the strings starting from the 5th string

Other A#/Bb Chords

[ Table ]

Other Dominant 7th, Flat 5th, Flat 9th Chords