Notes: C, Db, E, Gb, G, A, and B - Key: C - Origin: Greek - Category: Octatonic Scales
The C Peiraiotikos 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 two black keys: Db, and Gb and five white keys: C, E, G, A, and B. This combination makes this scale - as well as the C Aeolian, C Aeolian Harmonic, and C Aeolian Major - as great choices for composing or improvising Greek music.
If we take a look a the key signature of the C Peiraiotikos Scale we can find it has two flats and no sharps. Therefore, on sheet music you will find two accidentals on the score. The notes of this scale are: C, Db, E, Gb, G, A, and B.