A#9#5 chord on piano
A Sharp Augmented Ninth, also written Bb9#5. Notes: A#, D, F#, G# and C.
How to play A#9#5
- Find A# just below middle C. That is the root.
- Add D, F#, G# and C above it, skipping the keys in between.
- Right hand fingering: 1-2-3-4-5, or split the chord between both hands. Left hand: play the root and fifth, and leave the upper notes to the right hand.
Notes
Notes 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# piano 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 piano?
Play A#, D, F#, G# and C together. With the right hand use fingers 1-2-3-4-5, or split the chord between both hands; with the left hand use play the root and fifth, and leave the upper notes to the right hand.
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.