The first part of "Sound! Euphonium, The Final Movie" hit theaters on April 24. To coincide with the premiere, it was announced that the sequel, Part 2, will be released on September 11.
Alongside the release date, the trailer, the first key visual, and information for the first wave of Mubichike (advance tickets) for Part 2 were revealed all at once. The trailer focuses on the protagonist, Kumiko Oumae, and her rival, Mayu Kuroe. Combined with their lines, the footage conveys their conflict and resolve leading up to the "final performance." It also includes many new cuts, such as Mayu as a child and the brass band club's executive members looking up at the Century Hall of the Nagoya International Congress Center—the venue for the national competition.