| Artist name | Roles | Recordings |
|---|---|---|
| GRYSL's Muurproject (Eenmalige uitbreiding van de band GRYSL) | ||
| Tony Roberts (Welsh singer-songwriter) |
| Artist name | Roles | Recordings |
|---|---|---|
| GRYSL's Muurproject (Eenmalige uitbreiding van de band GRYSL) | ||
| Tony Roberts (Welsh singer-songwriter) |
| Artist name | Roles | Recordings |
|---|---|---|
| GRYSL's Muurproject | vocal | 関白宣言 |
| Tony Roberts | vocal | 愛は勝つ |