“Star Wars” is omnivorous in its inspiration. The saga, which continues in December with “Episode VIII: The Last Jedi,” nods to classical mythology, Arthurian legend and even Wagner’s “Ring” cycle.

John Williams’s music for the series — which the New York Philharmonic will perform live, from Sept. 15 through Oct. 7, alongside screenings of the original trilogy and “Episode VII: The Force Awakens” — contain some of the most memorable themes in film history.

And like the movies themselves, the score is rooted in the classics.