The theme song, "Don't Disturb Me", and ending theme, "Atashi no Sekai Seifuku" (あたしの世界征服, lit. "My world domination"), are performed by a specially-formed band composed of Sherina Munaf on vocals, Hiroki Kamemoto of Glim Spanky on guitar, Kiyokazu Takano of Mrs. Green Apple on bass, Kavka Shishido on drums, and Takebe on keyboards.[16] The film's original soundtrack album was released on January 6, 2021.[17] The album Earwig and the Witch Songbook: 13 Lime Avenue, which is credited to the film's fictional band "Earwig", was released on January 26, 2022. In addition to the above musicians (sans Takano), the album also features Glim Spanky vocalist Remi Matsuo and Yoasobi support musician Hikaru Yamamoto.[18]