| Name | Character | Episodes |
|---|---|---|
| Udo Jürgens | Self | 1 |
| Patricia Kaas | Self | 1 |
| Angela Gheorghiu | Self | 1 |
| Natalie Dessay | Self | 1 |
| Andrea Bocelli | Self | 1 |
| Ralf Schmitz | Self | 1 |
| Herbert Feuerstein | Self | 1 |
| Joseph Calleja | Self | 1 |
| Rolando Villazón | Self | 1 |
| Name | Character | Episodes |
|---|---|---|
| Udo Jürgens | Self | 1 |
| Patricia Kaas | Self | 1 |
| Angela Gheorghiu | Self | 1 |
| Natalie Dessay | Self | 1 |
| Andrea Bocelli | Self | 1 |
| Ralf Schmitz | Self | 1 |
| Herbert Feuerstein | Self | 1 |
| Joseph Calleja | Self | 1 |
| Rolando Villazón | Self | 1 |