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

C♯ 7♯9

Notes: C♯ – E♯ – G♯ – B – D♯♯
Degrees: 1 – 3 – 5 – ♭7 – ♯9
Also written: C♯7♯9Lower D♯♯ to D♯ and it is C♯9; lower G♯ to G and it is C♯7♭5♯9. C♯, E♯ and B do not move.
D♭ 7♯9
This is the same chord as D♭ 7♯9: the same keys on the keyboard, spelled with flats.

Construction

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

How to Play the C♯ 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

C♯ 7♯9 : Frequently Asked Questions

What is the C♯ 7♯9 chord on piano?
The C♯ 7♯9 chord contains the notes C♯ – E♯ – G♯ – B – D♯♯. On piano, play these notes together to sound the chord.
What notes are in the C# 7♯9 chord?
The C# 7♯9 chord (C#7♯9) contains 5 notes: C#, F, G#, B, E. Formula: R-M3-P5-m7-A9.
How is C#7♯9 used in music?
C#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 C#7♯9?
C#7♯9 uses scale degrees 1-3-5-b7-#9, giving it its distinctive sound.

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