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