Guitar chord · Ninths

A♯ dominant 7th sharp 9 chord on guitar

××1A♯C𝄪2G♯3B𝄪

x1012x · Open position
All 6 shapes, tab & fingering ↓

6 ways to play A♯7♯9 on guitar, with finger positions, tabs and step-by-step instructions.

The “Hendrix chord” — gritty, with major and minor 3rds clashing.

Spell as B♭7♯9
Notes
A♯C𝄪E♯G♯B𝄪
Formula
135♭7♯9
Built from
root · major 3rd · perfect 5th · minor 7th · augmented 9th

Guitar

Standard tuning (E A D G B E) · 6 voicings · E string on the left · Other tunings →

××1A♯C𝄪2G♯3B𝄪

How to play it · Open position

  1. 6th string (low E): don’t play — mute it
  2. 5th string (A): 1st fret, index finger (1) A♯
  3. 4th string (D): play open C𝄪
  4. 3rd string (G): 1st fret, middle finger (2) G♯
  5. 2nd string (B): 2nd fret, ring finger (3) B𝄪
  6. 1st string (high E): don’t play — mute it

Tablature

e|--x---|
B|--2---|
G|--1---|
D|--0---|
A|--1---|
E|--x---|

Top line is the high E string. x = don’t play, 0 = open string.

Every A♯7♯9 note on the guitar neck

Bright dots are the selected voicing — the rest are other places you can find the same chord tones.

EADGBe1234567891011121314155♭7R♯935R♯935♭7R35♭7R♯935♭7R♯935♭7R♯935♭7R♯935♭7R♯935

Tips for playing A♯7♯9 on guitar

On guitar, A♯7♯9 has an open-position shape, x1012x, using three fingers alongside the open strings. Don’t strum the low E and high E strings.

Notice the C𝄪 in A♯7♯9 (A♯ C𝄪 E♯ G♯ B𝄪): each note of the chord takes its own letter (A–C–E–G–B), so the major 3rd has to be written C𝄪 rather than D — the same key on a piano, spelled to fit the chord.

A♯7♯9 guitar chord diagram (A♯ dominant 7th sharp 9)
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