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Dominant family

C dominant seventh flat nine chord

C7♭9

C dominant seventh flat nine

Piano root position

  • Root
  • 3
  • 5
  • ♭7
  • ♭9

Guitar standard tuning

Barre · fret 2

Lay your index flat across strings 4 to 2 at fret 2.

E×ADGBe×12345Barre at fret 2CEB♭D♭

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

Notation treble clef

𝄞♭♭

Intervals

12 semitones
  1. C1
  2. D♭♭9
  3. 2
  4. ♭3
  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♭ Minor 9th

About this chord

What is a C dominant seventh flat nine chord?

C7♭9 is built from 5 notes: C (the root), E (the 3), G (the 5), B♭ (the ♭7), D♭ (the ♭9). Dark tension that pulls hard towards a minor 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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