Take composer Hans Zimmer for example. Zimmer has composed scores for more than 150 films, working with dozens of filmmakers. And he understands how music can support and enhance a narrative theme, creating a cohesive whole. In his work with Christopher Nolan, The Dark Knight (2008), Inception (2010), Interstellar (2014), his compositions explore the recurring theme of time:
i think this is important to understand that music can create emotion and a better movie for the audeince and the plot of the characters.