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B flat diminished seventh chord (Bb°7) on piano

The B flat diminished seventh chord (Bb°7) on piano has 4 notes: B flat, D flat, F flat, and A double flat (B♭, D♭, F♭, A𝄫). With the right hand, use fingers 1-2-3-5; with the left hand, 5-3-2-1 (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♭D♭F♭A𝄫
Formula
1♭3♭5𝄫7

How to play Bb°7 on piano

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

Bb°7 chord (B flat diminished seventh) on piano, root position: keys Bb, Db, Fb, Abb

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

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.

Bb°7 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 (Bb°7/Db)

    Bb°7/Db: D flat (♭3) in the bass

    Bb°7/Db chord (B flat diminished seventh) on piano, 1st inversion: keys Db, Fb, Abb, Bb

    From low to high: D♭ F♭ A♭♭ B♭

  2. 2nd inversion (Bb°7/Fb)

    Bb°7/Fb: F flat (♭5) in the bass

    Bb°7/Fb chord (B flat diminished seventh) on piano, 2nd inversion: keys Fb, Abb, Bb, Db

    From low to high: F♭ A♭♭ B♭ D♭

  3. 3rd inversion (Bb°7/Abb)

    Bb°7/Abb: A double flat (𝄫7) in the bass

    Bb°7/Abb chord (B flat diminished seventh) on piano, 3rd inversion: keys Abb, Bb, Db, Fb

    From low to high: A♭♭ B♭ D♭ F♭

Notes and intervals of Bb°7

Bb°7 (B flat diminished seventh) is built from 4 notes. Each one fills a degree of the chord:

  • B♭ · 1 · root
  • D♭ · ♭3 · minor third
  • F♭ · ♭5 · diminished fifth
  • A𝄫 · 𝄫7 · diminished seventh

About the diminished seventh chord

The diminished seventh splits the octave into four equal parts: the same shape repeats every 3 frets and the chord has four possible names. A sound of drama and suspense; the classic passing chord of choro, samba, tango and silent-film scores.

Other B flat chords

Diminished seventh: other roots

Arpeggio

Frequently asked questions

What are the notes of the Bb°7 chord on piano?

Bb°7 (B flat diminished seventh) has the notes B♭, D♭, F♭, A𝄫. The formula is 1 · ♭3 · ♭5 · 𝄫7: root, minor third, diminished fifth, diminished seventh.

How do you play Bb°7 on piano?

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

What are the inversions of Bb°7?

1st inversion (Bb°7/Db): D♭ F♭ A♭♭ B♭; 2nd inversion (Bb°7/Fb): F♭ A♭♭ B♭ D♭; 3rd inversion (Bb°7/Abb): A♭♭ B♭ D♭ F♭.

What does Bb°7 mean?

Bb°7 is the chord symbol for B flat diminished seventh. The diminished seventh splits the octave into four equal parts: the same shape repeats every 3 frets and the chord has four possible names. A sound of drama and suspense; the classic passing chord of choro, samba, tango and silent-film scores.

Is the Bb°7 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.

Bb°7 on other instruments

All piano chords