| Artist name | Roles | Recordings |
|---|---|---|
| André Tanneberger | arranger, engineer, producer | Breathe, Jetstream, Sternwanderer |
| Rüdiger Dittmann | arranger, engineer, producer | Breathe, Jetstream, Sternwanderer |
| Artist name | Roles | Recordings |
|---|---|---|
| Carol Emanuel | guitar | Blue Ridge |