| Nome | Anno |
|---|
| Hollaender: Münchhausen ft. Matrix Ensemble, Jeff Cohen, Robert Ziegler | 1995 |
| Hollaender: Zieh Dich Aus, Petronella! ft. Matrix Ensemble, Jeff Cohen, Robert Ziegler | 1995 |
| Hollaender: Take it off Petronella! ft. Matrix Ensemble, Jeff Cohen, Robert Ziegler | 1996 |
| The Punk And The Godfather ft. Alfie Boe, Royal Philharmonic Orchestra, Robert Ziegler | 2015 |
| I'm One ft. Alfie Boe, Royal Philharmonic Orchestra, Robert Ziegler | 2015 |
| Spoliansky: The Lavender Song ft. Matrix Ensemble, Robert Ziegler | 1996 |
| Spoliansky: When the Special Girlfriend ft. Jeff Cohen, Robert Ziegler, Matrix Ensemble | 1996 |
| Weill: One Touch of Venus - Speak Low ft. Matrix Ensemble, Robert Ziegler | 2001 |
