This is Lex Luthor. Only one thing alive with less than four legs can hear this frequency, Superman, and that’s you.
When you think about science fiction theme tunes, chances are there are a few that are especially stirring and heroic. Star Wars. 2001: A Space Odyssey. Star Trek: The Next Generation. Superman: The Movie. And all of these theme tunes have something in common: they rely on the same basic intervals.
We talked to music experts — including legendary composer Bear McCreary — to find out why so many famous theme tunes use the “perfect fifth” for their hook.
Most people will instantly recognize the first few notes in 2001: A Space Odyssey, which was originally known as “Also sprach Zarathustra” by Richard Strauss. It starts with a low C, and then goes up five notes to a G — that’s a perfect fifth right there. And then the next note is another C, up an octave from the first C.
But the Star Wars theme, by John Williams, relies on a similar progression. The first few sustained notes in Star Wars are a G, going up a perfect fifth to a D, and then a higher G. Williams also plays with a descending perfect fifth in the Superman: the Movie score. And his E.T.: The Extraterrestrial theme also starts with an ascending perfect fifth. (…)
“It has its basis in physics,” says McCreary. “It’s a physical reality.” There’s an actual physical phenomenon behind the perfect fifth, and the octave above that, called the “overtone series.” Here’s how it works, according to McCreary:
