How many movies have John Williams and Yo-Yo Ma collaborated on?

They have worked on 3 movies together! Their first movie together was Seven Years in Tibet (1997) while their highest rated movie together was Leonard Bernstein Centennial Celebration at Tanglewood (2018). They have not worked together since Leonard Bernstein Centennial Celebration at Tanglewood (2018). They are most known for their history films together.