How to play A Dominant 7 sharp 9 on guitar
These shapes are for standard tuning (E A D G B E). The first is the easiest, and the others sit in different positions on the neck. Playing in another tuning? Pick it above the diagrams and the shapes are redrawn for it.
Shape 1: 505520
- Press the 6th string (E) at fret 5.
- Press the 4th string (D) at fret 5.
- Press the 3rd string (G) at fret 5.
- Press the 2nd string (B) at fret 2.
- Let the 5th, 1st strings ring open.
Shape 2: x05520
- Press the 4th string (D) at fret 5.
- Press the 3rd string (G) at fret 5.
- Press the 2nd string (B) at fret 2.
- Let the 5th, 1st strings ring open.
- Don't play the 6th string.
Shape 3: 575658 (from fret 5)
- Lay your index finger flat across the 2nd to 6th strings at fret 5 (a barre).
- Press the 5th string (A) at fret 7.
- Press the 3rd string (G) at fret 6.
- Press the 1st string (e) at fret 8.
The numbers in the shape name list the fret for each string from the lowest (thickest) to the highest, with x meaning that string is not played and 0 meaning it rings open.
Notes in A Dominant 7 sharp 9
| Note | Role |
|---|---|
| A | 1 (root) |
| C♯ | 3 |
| E | 5 |
| G | ♭7 |
| B♯ | ♯9 |
The formula for A Dominant 7 sharp 9 (7♯9) is 1 3 5 ♭7 ♯9: take the root, then the scale degrees listed.
When to use A7♯9
The dominant 7 sharp 9 is gritty and bluesy: the Hendrix chord. It is at home in rock, funk and blues, where the major and minor third seem to sound at once.
Other A chords
A, Am, A7, Amaj7, Am7, Asus2, Asus4, A°, A+, Aadd9, A6, Aø7
Other dominant 7 sharp 9 chords on guitar
C7♯9, D♭7♯9, D7♯9, E♭7♯9, E7♯9, F7♯9, F♯7♯9, G7♯9, A♭7♯9, B♭7♯9, B7♯9
Frequently asked questions
How do you play A Dominant 7 sharp 9 on guitar?
The easiest A7♯9 shape on guitar is 505520 (Press the 6th string (E) at fret 5. Press the 4th string (D) at fret 5. Press the 3rd string (G) at fret 5. Press the 2nd string (B) at fret 2. Let the 5th, 1st strings ring open.)
What notes are in A Dominant 7 sharp 9?
A Dominant 7 sharp 9 (A7♯9) contains the notes A C♯ E G B♯. The formula is 1 3 5 ♭7 ♯9.
How many guitar shapes are there for A7♯9?
There are many. This page shows 3 common ones at different positions, easiest first. Moving a barre shape up the neck gives the same chord type on other roots.
See A Dominant 7 sharp 9 on ukulele, check its notes in the chord finder, or transpose a whole song with the chord transposer. Browse the full guitar chord library.