Cast & crew
Margreet Honig – True Singing (2023)
Directed by Stefan Haupt Written by Stefan Haupt
Cast
| Margreet Honig | Herself |
| Maria Díaz Coca | Herself |
| Hans Adolfsen | Himself |
| Magdalena Kožená | Herself |
| Rafael Oliveira Gonçalves | Himself |
| Eszter Gyüdi | Herself |
| Gerben van der Werf | Himself |
| Alicia Gabriela Martínez | Herself |
| Amanda Manda Seiler | Herself |
| Samuel Zünd | Himself |
| Alma Unterweger | Herself |
Crew
| Stefan Haupt | Producer |
| Stefan Haupt | Director |
| Mourad Keller | Sound |
| Giancarlo Moos | Director of Photography |
| Patrick Lindenmaier | Director of Photography |
| Stefan Haupt | Writer |
| Christof Schertenleib | Editor |