The Sky of Kamuy was composed in 2025 for Brain Music as a flexible ensemble work for 5 to 8 players (4 to 6 winds and 1 or 2 percussion).
The piece is inspired by the Ainu people, an Indigenous group with a unique culture that has flourished for centuries, primarily in Hokkaido, Japan. From the northern regions of Sakhalin and the Kuril Islands to the northern part of Honshu, the Ainu traditionally lived in harmony with nature, relying on hunting and peaceful trade with neighboring peoples. However, beginning in the 19th century, their way of life was drastically altered by the Meiji government's development of Hokkaido and assimilation policies. Their land was taken, hunting was restricted, and they were pressured to adopt the language, clothing, and customs of the Japanese population from the main islands.
Although their culture suffered under these hardships, the strength and resilience of the Ainu people have preserved their traditions through to the present day. Today, there is a growing awareness and appreciation of Ainu heritage both in Japan and abroad. This piece was composed as a tribute to their indomitable spirit and cultural legacy. The word Kamuy in the title comes from the Ainu language and refers to the spiritual essence believed to inhabit all things in nature-a term symbolizing the heart of the Ainu worldview.
The piece is designed to produce a full, rich sound even with a small number of players, making it ideal for ensemble contests as well as wind band competitions performed by smaller groups. Percussion can be played by just one person, but if more players are available, parts can be divided by instrument. In Part 7, if a suspended cymbal is placed in front of the drum, both can be played simultaneously with the same sticks.

(Hayato Hirose)