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Dominant family

B♭ dominant seventh sharp nine chord

B♭7♯9

B♭ dominant seventh sharp nine

Piano root position

  • Root
  • 3
  • 5
  • ♭7
  • ♯9

Guitar standard tuning

Barre · fret 3

Lay your index flat across strings 4 to 2 at fret 3.

EADGBe34567Barre at fret 3B♭C♯FB♭DA♭

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

Notation treble clef

𝄞♭♭♯

Intervals

12 semitones
  1. B♭1
  2. ♭2
  3. 2
  4. C♯♯9
  5. D3
  6. 4
  7. ♭5
  8. F5
  9. ♯5
  10. 6
  11. A♭♭7
  12. 7
  • B♭ Root
  • D Major 3rd
  • F Perfect 5th
  • A♭ Minor 7th
  • C♯ Augmented 9th

About this chord

What is a B♭ dominant seventh sharp nine chord?

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

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

Neighbours

Chords close to B♭7♯9

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