Sound! Euphonium the Movie – May the Melody Reach You!
劇場版 響け!ユーフォニアム~届けたいメロディ~ (original)
Starring Ayaka Asai, Moe Toyota, Chika Anzai, Tomoyo Kurosawa, Minako Kotobuki, Kenjiro Tsuda, Yuichi Nakamura, Nao Toyama, Aya Hisakawa, Miyuki Kobori
It's a animation and drama movie, and has a rating of 7 out of 10 from Imdb which is usually fine for this kind of movie.
Watch it here
Not found streaming from Chile.