| Artist name | Roles | Recordings |
|---|---|---|
| Cesar (performed trumpet on Olli Schulz - "Wenn die Sonne wieder…") | performer | Never Leave, Positivity, Raise My Hand |
| Ken Cesar | performer | Be My Light |
| Artist name | Roles | Recordings |
|---|---|---|
| Ivan Moody | accordion | Native Tune, Russian Tunes |