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