| Artist name | Roles | Recordings |
|---|---|---|
| Cathy Burton | performer | Certainty (Mark Otten dub) |
| Markus Schulz | mix-DJ | Here for Me (Mark Otten extended mix) |
| Ruben de Ronde | mix-DJ | Certainty (Mark Otten vocal mix) |
| Artist name | Roles | Recordings |
|---|---|---|
| Cathy Burton | performer | Certainty (Mark Otten dub) |
| Markus Schulz | mix-DJ | Here for Me (Mark Otten extended mix) |
| Ruben de Ronde | mix-DJ | Certainty (Mark Otten vocal mix) |
| Artist name | Roles | Recordings |
|---|---|---|
| Cathy Burton | performer | Certainty (Mark Otten dub) |
| Markus Schulz | mix-DJ | Here for Me (Mark Otten extended mix) |
| Ruben de Ronde | mix-DJ | Certainty (Mark Otten vocal mix) |