Notes: C, Eb, F, G, and Bb - Key: C - Origin: Chinese - Category: Hexatonic Scales
The C Yu 2 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: Eb, and Bb and three white keys: C, F, and G. This combination makes this scale - as well as the C Qing Shang, C Qing Yu, and C Quan Ming - as great choices for composing or improvising Chinese music.
If we take a look a the key signature of the C Yu 2 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, Eb, F, G, and Bb.