How many movies have Friedrich Gulda and Wolfgang Amadeus Mozart collaborated on?

They have worked on 1 movie together! Their first movie together was Mozart: Fantasia, K 397; Sonata, K 333, K 576 (1995) and was their highest rated movie together. They have not worked together since Mozart: Fantasia, K 397; Sonata, K 333, K 576 (1995).