| Artist name | Roles | Recordings |
|---|---|---|
| Ayreon | ||
| Star One (Dutch progressive metal supergroup) |
| Artist name | Roles | Recordings |
|---|---|---|
| Ayreon | ||
| Star One (Dutch progressive metal supergroup) |
| Artist name | Roles | Recordings |
|---|---|---|
| Ayreon | vocal | The Accusation |
| Star One | vocal | Two Plus Two Equals Five |