Trivia

The English Dub interestingly features an entirely different Cast from the Sound! Euphonium spin-off movie Liz and the Blue Bird, despite being made by the same Company, Eleven Arts. For example, Courtney Shaw Voices Kumiko in Liz and the Blue Bird, But Erica Mendez plays her in this Movie. This was most likely done to make the two films stand apart from each, as Liz and the Blue Bird was released as a Stand-alone Movie, Dispite how the 2 Movies take place at the same time & Feature Similar Themes and overarching Narratives; as well as how the Japanese Dub features the Returning Voice cast of the Show & therefore features the Same Voice Cast across both Movies.

The last project of which Shôko Ikeda served for character designer for before her death in 2019.

Sarah Anne Williams & Megan Harvey (who voice Natsuki & Yuuko, Respectively) are the only Actors to reprise their Roles from the English Dub of Liz & the Blue Bird, the Sound Euphonium Spin-off Film.

Naoko Yamada's last work for her long time employer Kyoto Animation.