In March 2018, this piece was commissioned for the wind band of Shikamoto Junior High School in Edogawa, Tokyo. It was completed in July of that year.
[The gravitational wave] was first predicted by Albert Einstein in his general theory of relativity, published between 1915 and 1916. In simple terms, when a massive object exists, it distorts the surrounding space-time. As the object moves, these distortions propagate outward in wave-like patterns-these are what we refer to as gravitational waves.
For nearly a century, the existence of gravitational waves remained unconfirmed. However, in 2016, a historic breakthrough was made when they were detected in nature for the first time. This discovery marked a significant step forward in our understanding of the universe, bringing new insights to the field of astronomy.

(Kento Ishikawa)