| Artist name | Roles | Recordings |
|---|---|---|
| Bliss (Floyd Fisher, Krisco, Maria Nocera; "Look Inside") | ||
| Ennio Morricone | ||
| Seer (US rock band) |
| Artist name | Roles | Recordings |
|---|---|---|
| Bliss | performer | Vorrei incontrarti fra cent'anni |
| Ennio Morricone | performer | もうこれ以上 |
| Seer | performer | Inventi |