Notes: C, Db, F, G, and Bb - Key: C - Origin: Japanese - Category: Hexatonic Scales
The C Insen 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: Db, and Bb and three white keys: C, F, and G. This combination makes this scale - as well as the C Akebono I, C Akebono II, and C Banshikicho - as great choices for composing or improvising Japanese music.
If we take a look a the key signature of the C Insen 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, Db, F, G, and Bb.