B-flat Dorian scale
The B-flat Dorian scale is a seven-note scale consisting of the notes B♭, C, D♭, E♭, F, G, and A♭. The scale corresponds to a natural minor scale with the sixth degree raised a half step.
The B-flat Dorian scale is a mode of the A-flat major scale. It contains the same notes but starts on the second degree of the major scale.