In a recent interview, Nolan explained how he used Shepard tones in his newest film, Dunkirk The screenplay had been written according to musical principals. Theres an audio illusion, if you will, in music called a Shepard tone and with my composer David Julyan on The Prestige we explored that and based a lot of the score around that. Related Book Ebook Pdf Boutique Bags Classic Modern Projects Home Calcium Techniques A Laboratory Manual Cajun And Creole Music Makers Musiciens Cadiens Et. And its an illusion where theres a continuing ascension of tone. Its a corkscrew effect. Its always going up and up and up but it never goes outside of its range. And I wrote the script according to that principle. I interwove the three timelines in such a way that theres a continual feeling of intensity. Increasing intensity. So I wanted to build the music on similar mathematical principals. Knowing this, you gain a deeper understanding of films like Interstellar, Inception, and The Prestige. It also explains why these films seem somehow inconclusive. A Shepards tone creates a conflict that cant be resolved, just like Nolans plots. Digg, Business Insider.