When I wrote The Motion of Clocks I was thinking about the direction of melodic contours, particularly unidirectional melodic counters. Works in which the general shape of the melody or harmonic texture primarily goes in only ascending or descending direction. The text for was adapted from Albert Einstein’s 1916 book, Relativity: The Special and the General Theory: “The motion of clocks is also influenced by gravitational fields, and in such a way that a physical definition of time which is made directly with the aid of clocks has by no means the same degree of plausibility as in the special theory of relativity.”