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