Bbdim7 chord

The Bbdim7 chord (Bb diminished seventh, also written A#dim7) on a piano: the notes, every inversion and the keys it belongs to. Tap play to hear it, and download it as MIDI.

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Bb1Dbb3Fb= Eb5Abb= Gbb7

About the diminished seventh chord

A diminished chord with a diminished seventh. Every note is a minor third from the next, which makes it dramatic and symmetrical.

Formula: 1 b3 b5 bb7. Used in: Film scores, classical, jazz and dark trap.

Bbdim7 inversions

Tap an inversion to hear it. Inversions keep the same notes in a different order, which lets chords move smoothly from one to the next.

More Bb chords

Other diminished seventh chords

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Questions

What notes are in a Bbdim7 chord?

Bb, Db, Fb (E), Abb (G).

What is the formula of a diminished seventh chord?

1 b3 b5 bb7. A diminished chord with a diminished seventh. Every note is a minor third from the next, which makes it dramatic and symmetrical.

Is Bbdim7 the same as A#dim7?

Yes. Bb and A# are the same key on the piano, so the chords sound the same. Which name is used depends on the key of the song.