The Golden Mean is where the ratio of x to y = the ratio of x+y to x (=1.618) The inverse of 1.618 = 0.618 <---------- x+y ----------> <------- x -----><-- y ---> Many classical composers used the golden mean, as a point where a climax or change would occur. (i.e. the climax would occur at the bar 62% of the way though the song.) Sometimes the golden mean was also applied within sections of a score (creating means within means, so to speak). Have you ever structured a song based on the Golden Mean? Or ... have you looked at whether your songs adhere to this ratio?