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Dominant family

C dominant seventh sharp nine chord

C7♯9

C dominant seventh sharp nine

Piano root position

  • Root
  • 3
  • 5
  • ♭7
  • ♯9

Guitar standard tuning

Fret 2

No barre: each note has its own finger.

E×ADGBe×12345CEB♭D♯

Finger: 1 index, 2 middle, 3 ring, 4 little

Notation treble clef

𝄞♭♯

Intervals

12 semitones
  1. C1
  2. ♭2
  3. 2
  4. D♯♯9
  5. E3
  6. 4
  7. ♭5
  8. G5
  9. ♯5
  10. 6
  11. B♭♭7
  12. 7
  • C Root
  • E Major 3rd
  • G Perfect 5th
  • B♭ Minor 7th
  • D♯ Augmented 9th

About this chord

What is a C dominant seventh sharp nine chord?

C7♯9 is built from 5 notes: C (the root), E (the 3), G (the 5), B♭ (the ♭7), D♯ (the ♯9). Major and minor third at once: the gritty rock and funk chord.

Notes
C · E · G · B♭ · D♯
Formula
1 · 3 · 5 · ♭7 · ♯9
Also written
C7(♯9)
Found in
Outside the major and minor keys

Neighbours

Chords close to C7♯9

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