Bb7(b5) chord
The B-flat dominant seventh flat five chord (abbreviated "Bb7(b5) chord") is a four-note chord consisting of the notes B♭, D, F♭, and A♭. The chord is formed by lowering the fifth of a B-flat dominant seventh chord a half step.
Name
B-flat dominant seventh flat five chord
Notes
B♭ D F♭ A♭
Intervals
1 3 ♭5 ♭7
Chord symbol
B♭7(b5)
Alternative symbol
B♭7b5
Type
tetrad (four-note chord)