Root on A string
no fifthx-12-11-12-13-x
A7♯9 chord on guitar
A7♯9 is the A dominant 7 sharp 9 chord. Its notes are A, C♯, E, G and B♯. A familiar blues-rock altered dominant. The fifth is omitted.
How to play A7♯9
Numbers show frets from the low E string to the high e string; x means don't play that string.
What's in A7♯9
- A1
- C♯3
- E5
- G♭7
- B♯♯9
- Formula
- 1 · 3 · 5 · ♭7 · ♯9
- Also written
- A7♯9
- Chord type
- Dominant 7 sharp 9
A7♯9 notes across the neck
Every A, C♯, E, G and B♯ on the first 12 frets. The filled dots are the root, A. Build your own shape from any nearby group.
Related chords
Other A chords
Other dominant 7 sharp 9 chords