Liz and the Blue Bird (Japanese: リズと青い鳥, Hepburn: Rizu to Aoi Tori) is a 2018 Japanese animated drama film directed by Naoko Yamada and written by Reiko Yoshida, based on the Sound! Euphonium novel series written by Ayano Takeda and its eponymous anime television series adaptation by Yamada and Tatsuya Ishihara. Inspired in particular by the 2017 Sound! Euphonium novel Hibike! Yūfoniamu Kitauji Kōkō Suisōgaku-bu, Haran no Dainigakushō Kōhen, the film is a spin-off sequel to the television series, focusing on the friendship of Mizore Yoroizuka and Nozomi Kasaki, two supporting characters introduced during the series' second season. It is intended as a standalone work that can be fully understood without prior knowledge of the series.