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

Symbols: 7(b5,#9), 7(-5,+9)

Steps: 1-3-b5-b7-#9

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

The A#/Bb 7(b5,#9) chord introduces both a flat fifth and a sharp ninth to the dominant seventh, creating an intensely expressive and edgy sound. With notes A#, D, E, Ab and C#, it's used to evoke a sense of mystery and unease in jazz or fusion. Below, you'll find how to play the "A#/Bb 7(b5,#9)" chord, finger placements and an audio sample.

Variation 1
A#/Bb7(b5,#9) guitar chord - variation 1
  • Place a barre using your index finger on the 12th fret from the 1st to the 4th strings
  • With your pinky, press down on the B (2nd) string at the 14th fret
  • Press the G (3rd) string on the 13th fret with your ring finger
  • Place your middle finger on the A (5th) string at the 13th fret and press down
  • Now, strum all the strings starting from the 5th string

Other A#/Bb Chords

[ Table ]

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