Notes: C, Db, Eb, F, Ab, and Bb - Key: C - Origin: Japanese - Category: Heptatonic Scales
The C Ritsu uses seven notes per octave. Because of this same reason it is a member of the so called Heptatonic -scales that have Seven-note (or Seven-tone). On the piano keyboard, it is made up of four black keys: Db, Eb, Ab, and Bb and two white keys: C, and F. 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 Ritsu Scale we can find it has four flats and no sharps. Therefore, on sheet music you will find four accidentals on the score. The notes of this scale are: C, Db, Eb, F, Ab, and Bb.