A9#5 chord on guitar
A Augmented Ninth. Notes: A, C#, F, G and B.
How to play A9#5
- Put your index finger on the 2nd (B) string at fret 2 (C#).
- Put your middle finger on the 4th (D) string at fret 3 (F).
- Put your ring finger on the 1st (high E) string at fret 3 (G).
- Put your pinky finger on the 3rd (G) string at fret 4 (B).
- Let the open A string ring.
- Don't play the low E string: skip it or mute it with a fretting finger.
- Strum from the A string down.
All 4 ways to play A9#5
Easiest first. Tap play to hear each one.Open position
EasyFret 3 position
EasyFret 5 position
MediumFret 11 position
HardNotes and theory
The augmented ninth (9#5) is a dominant ninth with a raised fifth, used as a strong pull toward the next chord. The formula is 1 3 #5 b7 9, and you will also see it written as Aaug9 and A+9. Strictly by music theory the notes are spelled A, C#, E#, G and B; E# is the same key as F.
More A chords
All A guitar chordsaugmented ninth chords in every key
Questions
What notes are in the A9#5 chord?
A9#5 (A augmented ninth) is made of five notes: A (root), C# (major third), F (augmented fifth), G (minor seventh) and B (ninth).
How do you play A9#5 on guitar?
The easiest A9#5 is the "open position" shape. Put your index finger on the 2nd (B) string at fret 2 (C#). Put your middle finger on the 4th (D) string at fret 3 (F). Put your ring finger on the 1st (high E) string at fret 3 (G).
Is A9#5 hard to play on guitar?
No. The easiest version is rated easy and uses 4 fretted notes plus open strings.
What does a augmented ninth chord sound like?
The augmented ninth (9#5) is a dominant ninth with a raised fifth, used as a strong pull toward the next chord.