For a long time I have been confused in the face of a problem, what the musicology is. Music and musicology have different dimension each to each. Thus, when I reflect on the musicology, I must stand off the music. It is very difficult. For, I am an artist. Music is an art. That is studied from a work of art. But. Musicology is a science. That has at least the scientific side. That needs the eyes of the scientist. Whether I stand off the music, I have the eyes of the artist as before. Thus, though I reflect on these musical phenomina musicologically, the essays are not always written scientifically. Musicology does not come into existence by only artists, not to mention, by only scientists. The combined efforts of artists and scientists will make the music and the musicology healthy, I think. And I become of conscious that the distinction in every sphere is important.