Harmony is the goal of the universe …
If it is true that the harmonic relationships in music reflect the harmonic and mathematical relationships in the planetary systems as well as the cosmos, then this must be valid also outside of music. Science has taught us that this phenomenon is universal. Two oscillators pulsating in the same field in almost identical rhythm will lock in, with the result that eventually their vibrations will become precisely synchronous. This phenomenon is referred to as mutual phase locking, or entrainment. Entrainment is universal in nature. In fact it is so ubiquitous that we hardly notice it as the air we breathe. It is a physical phenomenon, but it is also more than that, because it informs us about the tendencies of the universe to share rhythm, that is to vibrate in harmony.
From’The World is Sound’ by Joachim-Ernst Brendt