The opening and closing theme from the Adventures of Superman TV series.
As iconic music as Rossini's William Tell Overture as used on The Lone Ranger, right?
Well, yes and no. And here's why.
NOBODY FUCKING KNOWS WHO WROTE IT.
I'm not kidding about this.
Apparently, and most of this is guesswork, the people who made the Superman show relied exclusively for their background music on a company called Mutel, that licensed stuff from 40s B-movie soundtracks that had originally been generated by vastly underpaid folks toiling mostly uncredited at what studios that were then called Poverty Row -- Republic, Monogram, etc.
In any event, the Superman music is officially credited to a guy named Leon Klatzkin, who was an arranger, not a composer.
According to Gary Grossman's fabulous history of the show -- Superman: Serial to Cereal, there is a rumor that the theme was written, uncredited, by the great Miklós Rózsa.
But the bottom line remains: Nobody fucking knows who composed a total fucking masterpiece.
Words fail me.