How many movies have John Williams and Jurgen Scharpf collaborated on?

They have worked on 5 movies together! Their first movie together was The Lost World: Jurassic Park (1997) while their highest rated movie together was Star Wars: Episode III - Revenge of the Sith (2005). They have not worked together since Star Wars: Episode III - Revenge of the Sith (2005). They are most known for their science fiction films together.