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Dominant family

B dominant seventh flat nine chord

B7♭9

B dominant seventh flat nine

Piano root position

  • Root
  • 3
  • 5
  • ♭7
  • ♭9

Guitar standard tuning

Barre · fret 1

Lay your index flat across strings 4 to 2 at fret 1.

E×ADGBe×12345Barre at fret 1BD♯AC

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

Notation treble clef

𝄞♯♯

Intervals

12 semitones
  1. B1
  2. C♭9
  3. 2
  4. ♭3
  5. D♯3
  6. 4
  7. ♭5
  8. F♯5
  9. ♯5
  10. 6
  11. A♭7
  12. 7
  • B Root
  • D♯ Major 3rd
  • F♯ Perfect 5th
  • A Minor 7th
  • C Minor 9th

About this chord

What is a B dominant seventh flat nine chord?

B7♭9 is built from 5 notes: B (the root), D♯ (the 3), F♯ (the 5), A (the ♭7), C (the ♭9). Dark tension that pulls hard towards a minor chord.

Notes
B · D♯ · F♯ · A · C
Formula
1 · 3 · 5 · ♭7 · ♭9
Also written
B7(♭9)
Found in
Outside the major and minor keys

Neighbours

Chords close to B7♭9

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