Composed in 2019. It was written at the request of the composer's eldest son, clarinetist Takuya Sunaga, for a piece themed around diminished seventh harmony. It was premiered in a parent-child performance by Takuya Sunaga and Katsuhiro Oguri. This piece, Feroce, is considered part of a trilogy for clarinet and piano, alongside Automne and Élégie. According to the composer, Feroce evokes a winter image throughout, with the struggle against nature forming the core of the work. The harshness of nature, such as storms and blizzards, and the accompanying human unease and agitation are depicted through the contrasting ensemble of clarinet and piano.

※This commentary was produced with the support of the Rohm Music Foundation.