Notes: C, D, E, F, G, Ab, and Bb - Key: C - Origin: Greek - Category: Octatonic Scales
The C Aeolian Major 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: Ab, and Bb and five white keys: C, D, E, F, and G. This combination makes this scale - as well as the C Aeolian, C Aeolian Harmonic, and C Aeolian Pentatonic - as great choices for composing or improvising Greek music.
If we take a look a the key signature of the C Aeolian Major 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, D, E, F, G, Ab, and Bb.