How many movies have Ennio Morricone and Marcello Danon collaborated on?

They have worked on 4 movies together! Their first movie together was The Black Belly of the Tarantula (1971) while their highest rated movie together was La Cage aux Folles (1978). They have not worked together since La Cage aux Folles 3: The Wedding (1985). They are most known for their comedy films together.