M-01
Performer: Shunsuke Takeuchi, Kentaro Kumagai
Composer: eba
Arranger: eba
Lyricist: Takayuki Tonegawa
M-02
Performer: Akigumi (Chiharu Sawashiro, Kento Hama, Shunsuke Takeuchi, Yuichi Jose, Kentaro Kumagai, Seiya Konishi)
Composer: Masayoshi Oishi
Arranger: Masayoshi Oishi, Yuki Nara
Lyricist: Masayoshi Oishi
M-03
Script: tom
Cast: Chiharu Sawashiro, Kento Hama, Shunsuke Takeuchi, Yuichi Jose, Kentaro Kumagai, Seiya Konishi
Album was composed by eba / Masayoshi Oishi and was released on July 24, 2019. Soundtrack consists of 5 tracks tracks with duration over about 30 minutes. Album was released by Pony Canyon.
CD 1
| 1 | Muddy Hero | 03:55 | |
| 2 | Ever☆Blooming! ～秋組Ver.～ | 03:54 | |
| 3 | 『A3!』ボイスドラマ 「MANKAIチャンネル ～秋組編～」 | 10:27 | |
| 4 | Muddy Hero (INSTRUMENTAL) | 03:55 | |
| 5 | Ever☆Blooming! (INSTRUMENTAL) | 03:50 | |
