The paper should be a summary of all the important concepts in Unit 4. You need not go back to the earlier Units unless you would like to make a specific point. The paper should include the concepts introduced in Unit 4, the films in which they were realized, how they were realized, their impact on the visual content, and the important composers. Also in detail, describe Mickey Mousing, the idea of the Leitmotif and its origin and how these various techniques influence the moving image. Please cite all references used in your research.