| Track Name | Track Artist | Album Artist | Album Name | Official Purchase/Artist Link | Album Genre | Source Track(s) |
|---|---|---|---|---|---|---|
| Prelude | Maria Saffron | Matthiola Records | Violetium 4 | Link | Dance | 少女秘封倶楽部 |
| Echo | Maria Saffron | Matthiola Records | Violetium 4 | Link | Dance | 少女秘封倶楽部 |
| Echo (Instrumental Ver.) | Maria Saffron | Matthiola Records | Violetium 4 | Link | Dance | 少女秘封倶楽部 |
| 一枝梅 (Ei ver.) | Maria Saffron | bunny rhyTHm | 4th Anniversary | Link | 幽霊楽団 ～ Phantom Ensemble | |
| 一枝梅 | Maria Saffron | bunny rhyTHm | 紅蓮の夕嵐 | Link | Misc Electronic | 幽霊楽団 ～ Phantom Ensemble |