Composer Hans Zimmer has contributed scores to films such as “Dune,” “Gladiator” and “Inception.” He now has his own film: “Hans Zimmer and Friends: A Diamond in the Desert.” Part concert film, part documentary, it features Zimmer performing his most famous works, and commentary from colleagues such as Christopher Nolan and music industry stars like Billie Eilish and Pharrell. Hans joins us in studio to discuss.