Notes: C, D#, E, G, and Bb - Key: C - Category: Hexatonic Scales
The C Pentatonic Major #9 b7 uses six notes per octave. Because of this same reason it is a member of the so called Hexatonic -scales that have Six-note (or Six-tone). On the piano keyboard, it is made up of two black keys: D#, and Bb and three white keys: C, E, and G. 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 Pentatonic Major #9 b7 Scale we can find it has one flats and one sharps. Therefore, on sheet music you will find two accidentals on the score. The notes of this scale are: C, D#, E, G, and Bb.