If you loved Sound! Euphonium The Movie: Welcome to the Kitauji High School Concert Band, try Sound! Euphonium: Ensemble Contest
A bridge between a film you've already seen and one most people haven't. Here's what they share, and what the second one does that the first one doesn't.

Sound! Euphonium The Movie: Welcome to the Kitauji High School Concert Band

Sound! Euphonium: Ensemble Contest
What they share
Both films are directed by Tatsuya Ishihara, and they both carry the bittersweet mood tag, and they sit in Animation / Drama / Music territory. If that's the register that drew you to Sound! Euphonium The Movie: Welcome to the Kitauji High School Concert Band, the second film will land in a comparable space — through a different lens.
What Sound! Euphonium: Ensemble Contest is
Bring It On if the cheerleaders played tubas. High-school band members face off in preliminary competitions to earn a spot at the Ensemble Contest. The new club leader is caught between factions and solos. It's a sweet distillation of the passions and petty grievances of adolescence.