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Dominant family

B dominant ninth chord

B9

B dominant ninth

Piano root position

  • Root
  • 3
  • 5
  • ♭7
  • 9

Guitar standard tuning

Fret 1

No barre: each note has its own finger.

E×ADGBe12345BD♯AC♯F♯

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

Notation treble clef

𝄞♯♯♯

Intervals

12 semitones
  1. B1
  2. ♭2
  3. C♯9
  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♯ Major 9th

About this chord

What is a B dominant ninth chord?

B9 is built from 5 notes: B (the root), D♯ (the 3), F♯ (the 5), A (the ♭7), C♯ (the 9). The dominant seventh with a ninth: funky and full.

Notes
B · D♯ · F♯ · A · C♯
Formula
1 · 3 · 5 · ♭7 · 9
Also written
Bdom9
Found in
Outside the major and minor keys

Neighbours

Chords close to B9

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