A#9#5 chord on guitar
A Sharp Augmented Ninth, also written Bb9#5. Notes: A#, D, F#, G# and C.
How to play A#9#5
- Put your index finger on the 5th (A) string at fret 1 (A#).
- Put your middle finger on the 3rd (G) string at fret 1 (G#).
- Put your ring finger on the 2nd (B) string at fret 1 (C).
- Put your pinky finger on the 1st (high E) string at fret 2 (F#).
- Let the open D 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 A#9#5
Easiest first. Tap play to hear each one.Open position
EasyBarre at fret 3
MediumBarre at fret 5
HardBarre at fret 6
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 A#aug9 and A#+9. Strictly by music theory the notes are spelled A#, C##, E##, G# and B#; C## is the same key as D, E## is the same key as F# and B# is the same key as C.
More A# chords
All A# guitar chordsaugmented ninth chords in every key
Questions
What notes are in the A#9#5 chord?
A#9#5 (A sharp augmented ninth) is made of five notes: A# (root), D (major third), F# (augmented fifth), G# (minor seventh) and C (ninth).
How do you play A#9#5 on guitar?
The easiest A#9#5 is the "open position" shape. Put your index finger on the 5th (A) string at fret 1 (A#). Put your middle finger on the 3rd (G) string at fret 1 (G#). Put your ring finger on the 2nd (B) string at fret 1 (C).
Is A#9#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.