The original soundtrack for the film "Poupelle of Chimney Town - The Promised Clock Tower" is now available. The music is composed by Harumi Fuuki, who is active across a wide range of fields including films, TV dramas, and musicals. Following the previous film, the soundtrack also includes the theme song "Poupelle of Chimney Town" performed by Lozareena, the ending theme "little star" for this film, and the insert song "366 Days" performed by Fuka Koshiba.