G#m9b5 chord on piano
G Sharp Half-Diminished Ninth, also written Abm9b5. Notes: G#, B, D, F# and A#.
How to play G#m9b5
- Find G# just below middle C. That is the root.
- Add B, D, F# and A# 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
G#root
Bb3 · minor third
Db5 · diminished fifth
F#b7 · minor seventh
A#9 · ninth
Notes and theory
G#root
Bb3 · minor third
Db5 · diminished fifth
F#b7 · minor seventh
A#9 · ninth
The m9b5 adds a ninth to a half-diminished chord, used in minor-key jazz. The formula is 1 b3 b5 b7 9.
More G# chords
All G# piano chordsG#majorG#mminorG#7dominant seventhG#m7minor seventhG#maj7major seventhG#sus4suspended fourthG#sus2suspended secondG#dimdiminishedG#augaugmentedG#6major sixthG#9dominant ninthG#add9added ninthG#m7b5half-diminishedG#dim7diminished seventhG#7sus4dominant seventh suspended fourthG#5power chordG#m6minor sixthG#m9minor ninth
half-diminished ninth chords in every key
Questions
What notes are in the G#m9b5 chord?
G#m9b5 (G sharp half-diminished ninth) is made of five notes: G# (root), B (minor third), D (diminished fifth), F# (minor seventh) and A# (ninth).
How do you play G#m9b5 on piano?
Play G#, B, D, 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 half-diminished ninth chord sound like?
The m9b5 adds a ninth to a half-diminished chord, used in minor-key jazz.