How many movies have Karl-Ernst Herrmann and Ursel Herrmann collaborated on?

They have worked on 2 movies together! Their first movie together was Mozart: La Clemenza di Tito (2005) while their highest rated movie together was Verdi: La Traviata (Teatro Regio di Parma) (2007). They have not worked together since Verdi: La Traviata (Teatro Regio di Parma) (2007).