As I remember the story, John Williams actually had this magnificent anthem written and in the trunk before he was brought in to compose the unforgettable score for "Star Wars."
Bonus points if you can hear the tonic-and-down-a-third move that was part of the main "Star Wars" theme and also the villains' march in "Superman, The Movie."
And also, just for the record:
The Han who didn't shoot first at Greedo was the one who would have come back to help Luke at the Death Star.
The Han who shot first at Greedo under the table would never have come back to help Luke at the Death Star.
That was the point: Han Solo grew.
Lucas didn't even understand his own characters.