The "ambiguity of sound" that Western notation has abandoned over a long period offers many insights for my compositions.

In this piece, classical four-note chord arpeggios and their fragments are played torrentially, but they gradually lose the possibility of being heard as individual notes, coalescing and merging to form new "ambiguous musical tones."

This is one technique of "obscuration of musical tones" that I have been working on since 1995; in that sense, this piece reveals only one facet of my music.

In 1996, it received the 13th New Composer Award of the Japan Society for Contemporary Music through its premiere by Yoshiko Shibuya.

Note that the title means "genesis" or "formation" in Latin.