via @garyewer (http://garyewer.wordpress.com/) "Structure is everything in songwriting; without structure, you've got a song that listeners just won't understand and can't get into. It's why we talk so much about the form of a song. An easily discernible form makes it more likely that listeners will remember a song. Because song forms..."
How Music Royalties Work? Here's an article that sums it up pretty well, It is pretty complex but this makes it clearer http://entertainment.howstuffw...