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B flat seventh flat nine chord (Bb7(b9)) on piano

The B flat seventh flat nine chord (Bb7(b9)) on piano has 5 notes: B flat, D, F, A flat, and C flat (B♭, D, F, A♭, C♭). With the right hand, use fingers 1-2-3-4-5; with the left hand, 5-4-3-2-1 (1 is the thumb). On the keyboard below, the root (B flat) has the strongest color; each key shows the note name and the degree.

Notes
B♭DFA♭C♭
Formula
135♭7♭9

How to play Bb7(b9) on piano

Root position · From low to high: B♭ D F A♭ C♭

Bb7(b9) chord (B flat seventh flat nine) on piano, root position: keys Bb, D, F, Ab, Cb

Right hand: 1-2-3-4-5 Left hand: 5-4-3-2-1

Fingers: 1 = thumb, 2 = index, 3 = middle, 4 = ring, 5 = little finger. The small dot marks middle C (C4). Tap a key to hear the note.

Bb7(b9) chord inversions

Inverting a chord means putting another of its notes in the bass (the lowest key) without changing the notes. Inversions shorten the way your hand travels from one chord to the next and slightly change the color of the sound.

  1. 1st inversion (Bb7(b9)/D)

    Bb7(b9)/D: D (3) in the bass

    Bb7(b9)/D chord (B flat seventh flat nine) on piano, 1st inversion: keys D, F, Ab, Bb, Cb

    From low to high: D F A♭ B♭ C♭

  2. 2nd inversion (Bb7(b9)/F)

    Bb7(b9)/F: F (5) in the bass

    Bb7(b9)/F chord (B flat seventh flat nine) on piano, 2nd inversion: keys F, Ab, Bb, Cb, D

    From low to high: F A♭ B♭ C♭ D

  3. 3rd inversion (Bb7(b9)/Ab)

    Bb7(b9)/Ab: A flat (♭7) in the bass

    Bb7(b9)/Ab chord (B flat seventh flat nine) on piano, 3rd inversion: keys Ab, Bb, Cb, D, F

    From low to high: A♭ B♭ C♭ D F

Notes and intervals of Bb7(b9)

Bb7(b9) (B flat seventh flat nine) is built from 5 notes. Each one fills a degree of the chord:

  • B♭ · 1 · root
  • D · 3 · major third
  • F · 5 · perfect fifth
  • A♭ · ♭7 · minor seventh
  • C♭ · ♭9 · flat ninth

About the seventh flat nine chord

A dominant chord with a flat ninth: maximum tension, with a Spanish and choro flavour. It is the typical V7 that resolves to a minor chord (E7♭9 → Am) and one of the most characteristic sounds of choro, flamenco and jazz.

Other B flat chords

Seventh flat nine: other roots

Frequently asked questions

What are the notes of the Bb7(b9) chord on piano?

Bb7(b9) (B flat seventh flat nine) has the notes B♭, D, F, A♭, C♭. The formula is 1 · 3 · 5 · ♭7 · ♭9: root, major third, perfect fifth, minor seventh, flat ninth.

How do you play Bb7(b9) on piano?

Find the B flat key and add the other notes above it: B♭, D, F, A♭, C♭. Play them all together. With the right hand, use fingers 1-2-3-4-5; with the left hand, 5-4-3-2-1.

What are the inversions of Bb7(b9)?

1st inversion (Bb7(b9)/D): D F A♭ B♭ C♭; 2nd inversion (Bb7(b9)/F): F A♭ B♭ C♭ D; 3rd inversion (Bb7(b9)/Ab): A♭ B♭ C♭ D F.

What does Bb7(b9) mean?

Bb7(b9) is the chord symbol for B flat seventh flat nine. A dominant chord with a flat ninth: maximum tension, with a Spanish and choro flavour. It is the typical V7 that resolves to a minor chord (E7♭9 → Am) and one of the most characteristic sounds of choro, flamenco and jazz.

Is the Bb7(b9) chord the same on piano and keyboard?

Yes. The notes and inversions are the same on any keyboard instrument: acoustic piano, digital piano, keyboard, organ or synthesizer.

Bb7(b9) on other instruments

All piano chords