I did a course in undergrad on Music of the Cinema and we looked a bit at Star Wars. Prof was an opera expert so we overdosed on opera (5 versions of Carmen...)
Prof had a couple of things. First, commonly known that there is hardly ever an absence of any music in Star Wars and this was done to cover up the often horrendous dialogue.
Second, lots of directly parallels between Star Wars and Wagner's Ring Cycle.
Also, cool jackets: