Is everyone here familiar with the 'golden mean'? Also called the golden proportion, and a whole bunch of other golden things, it's the proportion that occurs all over the place in nature.
It occurs in the structure of leaves, in the shape of shells, the proportions of your body parts, and - surprise! - in a lot of the music we love so much. Go and look for it: it's roughly a proportion of thirds. It's one of the first things we learn in photography (in that field it's called the "rule of thirds").
Here are some examples for your edification:
the Parthenon:
Leonardo Da Vinci's drawing applying the golden mean to the human head:
Well, it turns out that some of your favorite video game music works that way, too! This guy did a detailed music theory analysis of the Zelda Nintendo themes... check it out!
