The use of the very familiar leitmotif as the source of Anakin and Padme's song created an emotional connection between the audience and the pairing which would eventually produce Luke, and thus Luke's Theme.
Williams' use of classical Wagnerian style composition and the leitmotif created a lasting impression that is easily recognizable by audiences born long after the first film aired.
Inspired by the rich architecture of Wagner's music on an epic story, Williams chose to score the first Star Wars and subsequent films using leitmotif.
Wagner used these leitmotif throughout his operas, particularly to identify a particular character whenever they made their appearance in the film.
So many of John Williams' musical movements are instantly recognizable, in part due to his use of Wagnerian musical styling such as the leitmotif.
The leitmotif is typically a chord progression, short melody or simple rhythm that recurs in music, literature or life.
This curse, the Leitmotif of the whole story, began to operate at once.
The method of presentation in both symphonies is by means of representative themes (Leitmotif), and their combination and interaction.
The more subtle examples are inexhaustible in variety and resource; and perhaps the climax of subtlety is the almost entire absence of Leitmotif in the first scene of the third act of Gotterddmmerung, when Siegfried throws away his last chance of averting his doom.
Let us illustrate Wagner's mature use of Leitmotif by the theme which happens to be associated with Alberich's ring.