Kitauji Quartet (北宇治カルテット) is a Japanese anime-related vocal unit and character-song project tied to the Sound! Euphonium franchise. Built around Kumiko Oumae and Tomoyo Kurosawa’s performance work, and centered on the four core Kitauji High School band members—Kumiko Oumae, Hazuki Katou, Midori Kawashima, and Reina Kousaka—the unit belongs to the ensemble-music side of the series and helps define the mood of the concert band story.
Rather than functioning as a conventional pop act, Kitauji Quartet is woven directly into the world of Sound! Euphonium. Its songs emphasize emotional vocals, school-band drama, and orchestral-influenced arrangements that mirror the series’ focus on rehearsal, performance, and the changing relationships between band members. For listeners searching for Kitauji or Kitauji Quartet, the project is a key part of the franchise’s musical identity, connecting the anime’s narrative with cast performances and the musical culture at the center of the story.
