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B♭ dominant 9th chord on piano

B♭9 is a dominant 9th chord built on B♭. It uses the notes B♭ - D - F - A♭ - C and sounds rich and funky, a staple of funk, gospel and jazz. It is also written as A♯ dominant 9th.

B♭ dominant 9th chord keyboard diagram: B♭, D, F, A♭, CDFCB♭A♭
Notes
B♭ D F A♭ C
Formula
1 - 3 - 5 - ♭7 - 9
Right hand fingering
1 - 2 - 3 - 5 on the upper four notes
Left hand fingering
5 on the root
Chord symbol
B♭9

How to play B♭9 step by step

  1. Find B♭. B♭ is the last black key in each group of three. The same key is also called A♯.
  2. Add D, 4 half steps above B♭.
  3. Add F, 7 half steps above B♭.
  4. Add A♭, 10 half steps above B♭.
  5. Add C, 14 half steps above B♭.
  6. Press all 5 keys together with fingers 1 - 2 - 3 - 5 on the upper four notes of your right hand. Keep your wrist level and let the weight of your arm do the work.

Frequently asked questions

What notes are in the B♭ dominant 9th chord?

The B♭ dominant 9th chord (B♭9) contains 5 notes: B♭, D, F, A♭, C. Its formula is 1 - 3 - 5 - ♭7 - 9.

How do you play B♭9 on piano?

Play the root B♭ alone with your left hand, then play D, F, A♭, C with your right hand. That spreads the five notes comfortably across both hands.

Is B♭ dominant 9th the same as A♯ dominant 9th?

Yes. B♭ dominant 9th and A♯ dominant 9th use exactly the same piano keys. The name you see depends on the key signature of the piece.

Other B♭ chords

Other dominant 9th chords