Based on the six pure tonal notes, these spiritual Gregorian chants and their special tones penetrate deep into the conscious and subconscious mind and usually draw strong emotional reactions. These original frequencies appear to have been “lost” over the centuries with the introduction of various new tuning methods. In Western cultures, the ancient system of tuning known as “Just Intonation” has been replaced by the “Twelve-Tone Equal Temperament” around the 16th century.
As described in the book “Healing Codes for the Biological Apocalypse” by Dr. Leonard Horowitz, the Solfeggio frequencies were essentially rediscovered in the mid-1970’s by Dr. Joseph Puleo, a physician and one of America’s leading herbalists. Dr. Puleo claimed to have been intuitively guided to examine the Book of Numbers (4th book of the Hebrew Bible and 4th of five books of the Jewish Torah). In Chapter 7 of the Book, between Verses 12 and 83, Dr. Puleo used a Pythagorean method of reducing to the verse numbers and uncovered a pattern of six repeating codes. According to him, it revealed a series of six electromagnetic sound frequencies which corresponded to the six missing tones of the ancient Solfeggio scale: 396 Hz, 417 Hz, 528 Hz, 639 Hz, 741 Hz, 852 Hz.