B flat diminished seventh piano chord - Bbdim7

The B flat diminished seventh chord is a 4-note chord consisting of the notes Bb, Db, Fb and Abb.
You can see these notes highlighted in the interactive piano chart below.
The chord itself is often abbreviated as Bbdim7.

Interactive piano diagram for the B flat diminished seventh chord

Piano keyboard displaying the B flat diminished seventh chord with the notes A# Bb Fb E G C# Db

Reduced chords

Chords that are a subset of Bbdim7. These contain less notes but all of them are included in Bbdim7.

B flat diminished seventh piano chord chart image

In case you prefer a non-interactive variant of the chord chart, we've embedded a PNG image below that shows the notes for the the Bbdim7 chord. Feel free to save or share the image as needed.

Piano chord chart for the B flat diminished seventh chord (Bbdim7). The notes Bb, Db, Fb and Abb are highlighted.