A♯9

A# 9th chord

Notes

A#DFG#C

Intervals

135b79

Root

A#

Voicings on standard tuning

Voicing 1
Voicing 2
Voicing 3
Voicing 4
Voicing 5
Voicing 6

About A♯9

Interval formula

1 – 3 – 5 – ♭7 – 9

Sound character

a dominant 7th with extra grit — funk and blues staple

Where it appears

The funk chord — think James Brown stabs and blues turnarounds.

Common progressions using A♯9

12-bar blues (I7–IV7–V7)

A#7→D#7→F7→A#7

A#9 works as the I chord of a blues in A#.

ii–V–I in D#

As a dominant, A#9 pulls strongly to D#.

Turnaround

D#→A#9→D#

A classic way to end a blues or soul chorus and loop back.

Other A# chords

Same quality, other roots