How many movies have Pietro Mascagni and Ruggero Leoncavallo collaborated on?

They have worked on 2 movies together! Their first movie together was Cavalleria rusticana / Pagliacci (1970) while their highest rated movie together was Cavalleria Rusticana/Pagliacci (1978). They have not worked together since Cavalleria Rusticana/Pagliacci (1978).