| Artist name | Roles | Recordings |
|---|---|---|
| Avantasia | ||
| Steven Porter (collaborative project of Katsunori Sawa & Yuji Kondo) |
| Artist name | Roles | Recordings |
|---|---|---|
| Avantasia | ||
| Steven Porter (collaborative project of Katsunori Sawa & Yuji Kondo) |
| Artist name | Roles | Recordings |
|---|---|---|
| Avantasia | vocal | The Final Sacrifice, The Seven Angels |
| Steven Porter | vocal | Rise of the 4th Reich |