| Artist name | Roles | Recordings |
|---|---|---|
| 20 Years of GMM | ||
| Bob Bicknell | ||
| Heinz Christen | ||
| Entics | vocal | Troppo famoso (feat. Entics) |
| Marracash | vocal | Qualcuno normale (feat. Marracash) |
| Artist name | Roles | Recordings |
|---|---|---|
| Entics | vocal | Troppo famoso (feat. Entics) |
| Marracash | vocal | Qualcuno normale (feat. Marracash) |
| Artist name | Roles | Recordings |
|---|---|---|
| 20 Years of GMM | performer | Bei momenti |
| Bob Bicknell | vocal | Nessuno parla più |
| Heinz Christen | performer | Siamo nella merda |