“So profound and robust were the principles of the system for melody, which Pythagoras established, that they have continued into modern times carrying the ancient music (melody) with its original purpose intact.  In the intervening period the music system of Pythagoras has been developed by Persian and Anatolian Sufis along the lines of ‘permutations and combinations’, thus enhancing and bringing out the full beauty of the Divine inspiration of his musical vision.  His original motivation was to show music as a vehicle to spiritual perfection. In this way it became the basis of the music used by mystics and like minded people throughout the ages.”

(Dr. Prosser, The Music of Rumi - preview)
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