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A piano reference: chords, scales, theory. Full MIDI.

G♯ 7♯9

Notes: G♯ – B♯ – D♯ – F♯ – A♯♯
Degrees: 1 – 3 – 5 – ♭7 – ♯9Also written: G♯7♯9Lower A♯♯ to A♯ and it is G♯9; lower D♯ to D and it is G♯7♭5♯9. G♯, B♯ and F♯ do not move.

The G♯ 7♯9 chord is a five-note chord made up of G♯, B♯, D♯, F♯, and A♯♯.

G♯ 7♯9 chord: G♯, B♯, D♯, F♯, A♯♯

It is built from a root, major third, perfect fifth, minor seventh, and augmented ninth.

A dominant 7th with a raised 9th: the "Hendrix chord," bluesy with major and minor 3rd together.

A♭ 7♯9
This is the same chord as A♭ 7♯9: the same keys on the keyboard, spelled with flats.

Construction

G♯ 7♯9 = Root + Major 3rd + Perfect 5th + Minor 7th + Minor 3rd = G♯, B♯, D♯, F♯, A♯♯
NoteIntervalDegree
G♯Root1
B♯Major 3rd3
D♯Perfect 5th5
F♯Minor 7th♭7
A♯♯Minor 3rd♭3

How to Play the G♯ 7♯9

Right Hand (RH)

Place your right hand over the keys with the thumb on the root. Use the fingering: 1 – 2 – 3 – 4 – 5

Left Hand (LH)

For the left hand, start with your pinky on the root. Use the fingering: 5 – 4 – 3 – 2 – 1

G♯ 7♯9 : Frequently Asked Questions

What is the G♯ 7♯9 chord on piano?
The G♯ 7♯9 chord contains the notes G♯ – B♯ – D♯ – F♯ – A♯♯. On piano, play these notes together to sound the chord.
What notes are in the G# 7♯9 chord?
The G# 7♯9 chord (G#7♯9) contains 5 notes: G#, C, D#, F#, B. Formula: R-M3-P5-m7-A9.
How is G#7♯9 used in music?
G#7♯9 is used in jazz, fusion, and contemporary music to add harmonic color. It appears as a dominant or tonic chord depending on context.
What is the scale degree formula for G#7♯9?
G#7♯9 uses scale degrees 1-3-5-b7-#9, giving it its distinctive sound.

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