How many movies have Ingo Metzmacher and Simon Keenlyside collaborated on?

They have worked on 1 movie together! Their first movie together was Giuseppe Verdi: "Falstaff" Salzburger Festspiele 2023 (2023) and was their highest rated movie together. They have not worked together since Giuseppe Verdi: "Falstaff" Salzburger Festspiele 2023 (2023).