One thing that’s interesting to me in JW Rinzler’s Howard Kazanjian biography is that allegedly one reason David Lynch turned down doing ROTJ was that he didn’t want to make a film that would be scored with John Williams’ music. I know Lynch generally prefers unsettling audio tracks rather than orchestral music pieces in his own work, but it’s still frankly startling (and certainly ballsy) for a a director to say they wouldn’t want a John Williams score if they directed a Star Wars movie.
I wonder how he felt about Toto’s work on DUNE. Was that something Dino De Laurentiis insisted on, perhaps?