A short piece on the theme of J.S. Bach, commissioned and composed by Zen-On. It was premiered at a concert by "The Four and Their Friends."

It is based on the C major Prelude from "The Well-Tempered Clavier, Book I", with parts of "The Musical Offering" embedded within it. All notes in this piece are derived from Bach's works.

The processing method is based on the name B-A-C-H. First, in terms of intervals, the entire piece is subjected to a zigzag motion of descending minor 2nd, ascending minor 3rd, and again descending minor 2nd. For example, the Prelude is processed by shifting each harmony according to this interval relationship, thereby creating changes in tonal color. The meter is replaced and utilized by the numerical sequence 2-1-3-8. The title is derived from these ideas. Duration: approximately 3 minutes.