Bbdim7 chord
The B-flat diminished seventh chord (abbreviated "Bbdim7 chord") is a four-note chord consisting of the notes B♭, D♭, F♭, and A♭♭. The chord is formed by adding a diminished seventh to a B-flat diminished chord.
Name
B-flat diminished seventh chord
Synonym
B-flat fully diminished chord
Notes
B♭ D♭ F♭ A♭♭
Intervals
1 ♭3 ♭5 ♭♭7
Chord symbol
B♭o7
Alternative symbols
B♭dim7 B♭dim B♭o
Type
Tetrad (four-note chord)