How many movies have Maurizio Biasini and Raul Ranieri collaborated on?

They have worked on 6 movies together! Their first movie together was Song That's Playing In My Head (Zum Zum Zum) (1969) while their highest rated movie together was Symphony of Love (1970). They have not worked together since Due bianchi nell'Africa nera (1970). They are most known for their comedy films together.