| Artist name | Roles | Recordings |
|---|---|---|
| Christina Aguilera | ||
| Kanye West | ||
| Tormentor (german thrash metal band) |
| Artist name | Roles | Recordings |
|---|---|---|
| Christina Aguilera | ||
| Kanye West | ||
| Tormentor (german thrash metal band) |
| Artist name | Roles | Recordings |
|---|---|---|
| Christina Aguilera | double bass | Hurt |
| Kanye West | double bass | Celebration |
| Tormentor | double bass | Bring Me Down |