Notes: C, B, Bb, A, Ab, G, Gb, F, E, Eb, D, and Db - Key: C - Category: Dodecatonic Scales
The C Chromatic (melodic) descending uses twelve notes per octave. Because of this same reason it is a member of the so called Dodecatonic -scales that have Twelve-note (or Twelve-tone). On the piano keyboard, it is made up of five black keys: B, A, Gb, E, and D and seven white keys: C, Bb, Ab, G, F, Eb, and Db. 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 Chromatic (melodic) descending 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, B, Bb, A, Ab, G, Gb, F, E, Eb, D, and Db.