QU4RTZ are Kasumi Nakasu (CV. Mayu Sagara), Kanata Konoe (CV. Akari Kito), Emma Verde (CV. Maria Sashide), Rina Tennoji (CV. Chiemi Tanaka)
M-01
Composer: Manabu Marutani, Carlos K.
Arranger: Carlos K.
Lyricist: Carlos K.
M-02
Composer: ygarshy
Arranger: PASSiON KiNG
Lyricist: Ayaka Miyake
Album was composed by carlos k. / Manabu Marutani / ygarshy and was released on February 12, 2020. Soundtrack consists of 5 tracks tracks with duration over about 35 minutes. Album was released by Lantis.
CD 1
| 1 | Sing & Smile!! | 04:41 | |
| 2 | Beautiful Moonlight | 03:58 | |
| 3 | Sing & Smile!! (Off Vocal) | 04:41 | |
| 4 | Beautiful Moonlight (Off Vocal) | 03:59 | |
| 5 | Valentine Party | 15:33 | |
