Everytime I hear Hedwig's Theme somewhere, I have to think of the Lyrics etched into my brain since my childhood: The closing song from the radio play (Heargame!!) "Räuber Hotzenplotz Folge 3", which has a suprisingly similar melody and structure. I dont wanna accuse John Williams of anytthing, but the radio play is from 1984, Harry Potter and the Philosophers Stone from 2001.