On-Gaku: Our Sound (Japanese: 音楽, lit. "Music") is a 2019 Japanese adult-animated musical comedy-drama film written, directed and animated by Kenji Iwaisawa, based on the 2005 self-published manga Ongaku to Manga by Hiroyuki Oohashi. The film was produced by the studios Rock’n Roll Mountain and Tip Top, and stars the voices of Shintaro Sakamoto, Tateto Serizawa, Tomoya Maeno, Ren Komai, Naoto Takenaka and Kami Hiraiwa. The plot concerns three high school delinquents with no prior musical experience who form their own rock music band.

On-Gaku had its world premiere at the Ottawa International Animation Festival on 26 September 2019, followed by a limited release in Japan on 11 January 2020. It received praise for its deadpan humour, musical score and vocal performances, and won Best Feature at the Ottawa International Animation Festival and the Ōfuji Noburō Award at the 75th Mainichi Film Awards. It was also nominated for Best Independent Animated Feature at the 48th Annie Awards and Best Animation Film at the 75th Mainichi Film Awards.