How many movies have Karl Böhm and Wolfgang Amadeus Mozart collaborated on?

They have worked on 6 movies together! Their first movie together was The Marriage of Figaro (1975) while their highest rated movie together was Mozart Symphonies Vol. II - Nos. 1,25,31,36,38 and "Eine Kleine Nachtmusik" (1978). They have not worked together since Mozart Requiem (2005). They are most known for their music films together.