Bbm9 piano chord — the keys, the inversions, the theory

Bbm9 is a minor ninth chord built from Bb, Db, F, Ab, C. Below: the keys to press, every inversion with its own diagram, the intervals it is made of, the keys whose scale contains it, and a progression that actually uses it. Press any diagram to hear it.

Bbm9

Bb · Db · F · Ab · C

Piano keyboardC4C5

Semitones above the root: 0 – 3 – 7 – 10 – 14

The third is minor — one semitone lower than in a major chord — which is where the darker colour comes from.

Inversions of Bbm9

  • Root position

    Bb · Db · F · Ab · C · bass Bb

  • Inversion 1

    Db · F · Ab · Bb · C · bass Db

  • Inversion 2

    F · Ab · Bb · C · Db · bass F

  • Inversion 3

    Ab · Bb · C · Db · F · bass Ab

Same chord, different note at the bottom. Press a diagram to hear it — inversions are how you move between chords without jumping your hand across the keyboard.

Keys that contain Bbm9

  • Dbvi
  • Abii

In Db it does this job: I – V – vi – IV

  1. Db
  2. Ab
  3. Bbm9
  4. Gb

Questions