G#9#5 chord on piano

G Sharp Augmented Ninth, also written Ab9#5. Notes: G#, C, E, F# and A#.

G#9#5 piano chord, root positionCEG#F#A#
Root position. Tap any key to hear it.

How to play G#9#5

  1. Find G# just below middle C. That is the root.
  2. Add C, E, F# and A# above it, skipping the keys in between.
  3. 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

G#root
C3 · major third
E#5 · augmented fifth
F#b7 · minor seventh
A#9 · ninth

Notes and theory

G#root
C3 · major third
E#5 · augmented fifth
F#b7 · minor seventh
A#9 · ninth

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 G#aug9 and G#+9. Strictly by music theory the notes are spelled G#, B#, D##, F# and A#; B# is the same key as C and D## is the same key as E.

More G# chords

All G# piano chords

augmented ninth chords in every key

Questions

What notes are in the G#9#5 chord?

G#9#5 (G sharp augmented ninth) is made of five notes: G# (root), C (major third), E (augmented fifth), F# (minor seventh) and A# (ninth).

How do you play G#9#5 on piano?

Play G#, C, E, F# and A# 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.