Notes: C, Db, Eb, Fb, G, Ab, and Bb - Key: C - Category: Octatonic Scales
The C Phrygian b4 uses eight notes per octave. Because of this same reason it is a member of the so called Octatonic -scales that have Eight-note (or Eight-tone). On the piano keyboard, it is made up of four black keys: Db, Eb, Ab, and Bb and three white keys: C, Fb, and G. This combination makes this scale - as well as the C Prometheus, C Prometheus Liszt, and C Prometheus Neapolitan - as great choices for composing or improvising music.
If we take a look a the key signature of the C Phrygian b4 Scale we can find it has five flats and no sharps. Therefore, on sheet music you will find five accidentals on the score. The notes of this scale are: C, Db, Eb, Fb, G, Ab, and Bb.