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Dominant family

D dominant seventh flat nine chord

D7♭9

D dominant seventh flat nine

Piano root position

  • Root
  • 3
  • 5
  • ♭7
  • ♭9

Guitar standard tuning

Barre · fret 4

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

E×ADGBe×45678Barre at fret 4DF♯CE♭

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

Notation treble clef

𝄞♯♭

Intervals

12 semitones
  1. D1
  2. E♭♭9
  3. 2
  4. ♭3
  5. F♯3
  6. 4
  7. ♭5
  8. A5
  9. ♯5
  10. 6
  11. C♭7
  12. 7
  • D Root
  • F♯ Major 3rd
  • A Perfect 5th
  • C Minor 7th
  • E♭ Minor 9th

About this chord

What is a D dominant seventh flat nine chord?

D7♭9 is built from 5 notes: D (the root), F♯ (the 3), A (the 5), C (the ♭7), E♭ (the ♭9). Dark tension that pulls hard towards a minor chord.

Notes
D · F♯ · A · C · E♭
Formula
1 · 3 · 5 · ♭7 · ♭9
Also written
D7(♭9)
Found in
Outside the major and minor keys

Neighbours

Chords close to D7♭9

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