On-Gaku: Our Sound
音楽 (original)
Having no skill, money, or even a full set of drums, three high school delinquents form a rock 'n' roll band to impress their only friend, avoid a rival gang, and jam out.
Starring Shintaro Sakamoto, Ren Komai, Tomoya Maeno, Tateto Serizawa, Kami Hiraiwa, Naoto Takenaka, Yasuyuki Okamura
It's a animation and comedy movie, and has a rating of 7.2 out of 10 from Imdb which is usually fine for this kind of movie.
Watch it here
Not found streaming from Denmark.