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

C♯ 7♯9♯11

Notes: C♯ – E♯ – G♯ – B – D♯♯ – F♯♯
Degrees: 1 – 3 – 5 – ♭7 – ♯9 – ♯11
Also written: C♯7♯9♯11Lower D♯♯ to D♯ and it is C♯9♯11. C♯, E♯, F♯♯, G♯ and B do not move.
D♭ 7♯9♯11
This is the same chord as D♭ 7♯9♯11: the same keys on the keyboard, spelled with flats.

Construction

C♯ 7♯9♯11 = Root + Major 3rd + Perfect 5th + Minor 7th + Minor 3rd + Diminished 5th = C♯, E♯, G♯, B, D♯♯, F♯♯
NoteIntervalDegree
C♯Root1
E♯Major 3rd3
G♯Perfect 5th5
BMinor 7th♭7
D♯♯Minor 3rd♭3
F♯♯Diminished 5th♭5

C♯ 7♯9♯11 : Frequently Asked Questions

What is the C♯ 7♯9♯11 chord on piano?
The C♯ 7♯9♯11 chord contains the notes C♯ – E♯ – G♯ – B – D♯♯ – F♯♯. On piano, play these notes together to sound the chord.
What notes are in the C# 7♯9♯11 chord?
The C# 7♯9♯11 chord (C#7♯9♯11) contains 6 notes: C#, F, G#, B, E, G. Formula: R-M3-P5-m7-A9-A11.
How is C#7♯9♯11 used in music?
C#7♯9♯11 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♯11?
C#7♯9♯11 uses scale degrees 1-3-5-b7-#9-#11, giving it its distinctive sound.

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