Notes: C, C#, D, D#, E, F, F#, G, G#, A, F#, and C - Key: C - Category: Undecatonic or Hendecatonic Scales
The C Chromatic (melodic) ascending uses eleven notes per octave. Because of this same reason it is a member of the so called Undecatonic or Hendecatonic -scales that have Eleven-note (or Eleven-tone). On the piano keyboard, it is made up of five black keys: C#, D#, F#, G#, and F# and seven white keys: C, D, E, F, G, A, and C. 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) ascending Scale we can find it has no flats and five sharps. Therefore, on sheet music you will find five accidentals on the score. The notes of this scale are: C, C#, D, D#, E, F, F#, G, G#, A, F#, and C.