The beginning of the music is an invitation to the labyrinth by vibraphone and marimba’s tremolo. Then, with count by the drum player, the drum’s shuffle rhythm dominates. The main theme appears and transforms while being repeated. This part is shortened and repeated after a brief interlude. The basic rhythm of the latter half is presented in the new tempo by the triangle and getting tense. After a canon by three players on xylophone, vibraphone and marimba, music flows into finale. "Rainfall Shuffle" is a fictious card shuffle which does not exist in reality.　This piece has been premiered by Player 1 Yoshiko Kanda, Player 2 Tamao Inano, Player 3 Hitomi Nagano on February 7, 2020, at Tokyo Opera City Ricital Hall, Tokyo, Japan.

The piece is one of the series of contemporary-style compositions starting with piano solo, which had been continually written since 2000. This particular trio had been completed in 2007, but unfortunately, there was no chance to be staged. It is great pleasure of the composer that this music has been premiered as one of the openly called-for-work for “Koshi no Kaze”. The piece has been significantly modified for this premiere. The motivation for composition is to incorporate various elements of “dance” in the world into piano trio, which is a typical chamber music style of the Western classical music as well as string quartets. The beginning and the ending form a “frame” for the entire work. In-between four dynamic styles, one static style, and parts rooted in the Western classical music. The title was borrowed from a novelette by a British sci-fi author, J. G. Ballard, "Vermilion Sands" and "Koshi no Kaze" which gave the opportunity of the premiere.　This piece has premiered at Koshi no Kaze vol.8 concert on November 10, 2019, in Niigata, by 3 distinguished artists, Ai Shohji (vn), Yohko Shibuya (vc), and Tomoko Ishii (pf).