J.M. Hurst’s "Principle of Commonality": One Divine Force | Ahmed Farghaly

The "Cyclic Principles" introduced by J.M. Hurst in the 1970s are universal, persisting since the dawn of time. Among these, the "Principle of Commonality" stands out, as it demonstrates that the cycles of disparate financial instruments—and, by extension, human activity—are synchronized by a singular, overarching divine force. Troughs of unrelated instruments occur almost simultaneously, while divergences in peaks or amplitudes stem from local or company-specific factors rather than the underlying rhythm.

» The Principle of Commonality assures us that identical specific and forecastable wave processes occur in all negotiable equities of all types on all markets of the world. So all-pervasive is this Principle that it is only the Principle of Variation that prevents the shape of price histories of all equities from being nearly identical. And, as we have seen, it is the interaction of fundamental events and situations with cyclicality, causing wave amplitude change, that is responsible for the Principle of Variation. 

» A Commonality Phasing Model is, in effect, a large measuring strip used to preserve wave phase and period information from the analysis of two or more equities. Only the most certain of the wave trough locations are used from any given analysis. As results are added from analysis of more and more equities, gaps are filled in and a commonality distribution range is established for each wave trough position in time. A commonality phasing model can be maintained continuously, thus recording the most definitive evidence of wave phase and period from all analyses conducted. «

The Principle of Commonality, J.M. Hurst, 1973. 

Hurst emphasized its practical value: understanding one cycle illuminates others, with minor deviations—his third type of the Principle of Variation [each market’s active cycles deviate from the nominal model’s average periods, and these deviations differ across instruments and times]—leaving global synchronization intact as dictated by the Principle of Commonality. Empirical studies across unrelated assets, commodities, equities, and economic time series confirm that the Principle of Commonality governs beyond any single economy, reflecting a universal rhythm and mirroring humanity’s progression from polytheism toward recognition of a monotheistic, single guiding influence.

 

“And your God is one God. There is no deity except Him, the Most Gracious, the Most Merciful.”
The Holy Qur’an, Surah Al-Baqarah (The Cow), 2:163.

  

The persistence of cyclical waves through recorded history suggests that Commonality is trans-historical. Data since around 1000 AD reveal continuous alignment, and extrapolation indicates these forces existed long before formal record-keeping. Historical observation supports this: human advancement in the Stone and Bronze Ages unfolded in temporal synchrony across disconnected populations, indicating the operation of the consistent underlying divine force.

 

“For every nation is an appointed term; when their term is reached,

neither can they delay it nor can they advance it an hour or a moment.” 

The Holy Qur’an, Surah Al-A‘rāf (The Heights), 7:34. 

 

While troughs—the beginnings and endings of cycles—are closely aligned across nations, local expression varies. Peaks may occur at different times, amplitudes differ, and local fundamentals shape trajectories. The Principle of Commonality thus governs temporal alignment of critical points while allowing variation in the wave’s characteristics.
 

Chart 1: Saudi Stock Exchange Index (Tadawul; magenta) versus Dow Jones (DJIA) from 2000 to 2025.

Empirical evidence validates these assertions. The Kuznets Swing (an 18-year cycle) peaked in 2006 in Saudi Arabia and in 2019 in the United States, yet both began in March 2003 and bottomed in the global low of March 2020. Minor discrepancies among sub-waves reflect local variation but do not disrupt the synchronization of primary troughs (see chart 1 above).

 

 Chart 2.1: Commodity Price Index and S&P 500, both from 1800 to 2025.

 

Chart 2.2: S&P 500 (red) versus Commodity Price Index from 1800 to 2025.

Longer-term studies, including continuous commodity prices and the S&P 500 since 1800, show that over 90 percent of cyclical troughs align temporally across instruments (see charts 2.1 and 2.2 above). 

Chart 3: Soybeans (yellow) versus the Saudi Stock Exchange Index (Tadawul) from 2011 to 2025.

Chart 4: German Dax (yellow) versus the Saudi Stock Exchange Index (Tadawul) from 1994 to 2003.

Even unrelated markets, such as soybean prices and the Saudi stock index (Tadawul), demonstrate strong temporal correspondence (chart 3 above). Comparisons of the German DAX and Saudi index (chart 4 above) reveal synchronization across multiple cyclic levels—the 18-month, 54-month (Kitchin), and 9-year (Juglar) waves—further confirming a unifying global force.

 

 Prophet Daniel (Daniyal) in the Lions' Den (Daniel 6:16–23, KJV).

“And all the inhabitants of the earth are reputed as nothing: and He doeth according to His will

in the army of heaven, and among the inhabitants of the earth: and none can stay His hand,

or say unto Him, What doest Thou?” The Holy Bible, Daniel 4:35 (KJV). 

 

Hurst’s Principle of Commonality thus affirms a single, synchronized force governing the timing of major and minor cycles, while local factors shape amplitude and peak positions. This robust alignment, persistent across centuries and diverse instruments, confirms that cyclical patterns are not random but manifestations of an underlying order.

“Is He not best who begins creation and then repeats it, and who provides for you from the heaven

and the earth? Is there a deity with Allah? Say, ‘Produce your proof, if you should be truthful.’” 

The Holy Qur’an, Surah An-Naml (The Ants), 27:64.

 

Today, we can confidently state that in this article we have presented our proof of a mysterious, dominant, and single force behind almost all fluctuations in human affairs. We can only ask God to grant us wisdom to recognize His design and join us with the righteous after we fulfill our appointed term in harmony with His will.

 

Reference:
Ahmed Farghaly (October 24, 2025) - The Principle of Commonality: The Single Underlying Force of God.

 

See also:
J.M. Hurst (1973) - Cycles Course - Cyclitec Services Training Course.

 Ernest Emery Richards (2017) - The Geometry of Infinite Mind and Living Systems.

Loai M. Dabbour (2012) - Harmony of Being: Geometry in Man, Nature, and Cosmos.  

Joachim-Ernst Berendt (1987) - The "Law of the Octave": The World Is Sound. 

Plato (360 BCE) - The Same, The Other, and The Essence: Theology of Arithmetic. 
Ahmed Farghaly (October 18, 2025) - Long-Term Commodity Cycles: Unraveling the Big Picture.

Planetary Harmonics | Larry Berg

 

 » The heavenly motions are nothing but a continuous song for several voices, to be perceived by the intellect, not by the ear; a music which, through discordant tensions, through syncopations and cadenzas as it were, progresses toward certain predesigned six-voiced cadences, and thereby sets landmarks in the immeasureable flow of time. « 

The Harmony of the World, Johannes Kepler, 1619. 

» Planetary angles affect solar activity, which, in turn, affects the biosphere, which includes human physical and emotional well being. In terms of physics, my guess is that the cause is the gravitational effect of harmonic angles on the sun. After a high harmonic occurs, solar activity increases, increasing solar radiation. Solar radiation is responsible for ionization of Earth's upper atmosphere, causing geomagnetic and atmospheric changes, which, in turn, affect weather and the biosphere. «  

» The fact that the sun affects weather, and that the weather affects biology, is fairly well established. There really is no doubt in my mind that we are affected, emotionally and hysically, by the weather and environmental radiations. There are many scientific studies showing this. Dr. Becker of New York is famous for his work showing how the human body's electrical field is altered by the natural cycles of Earth's magnetic field, causing changes in biorhythms. « 

» John Nelson took the electromagnetic approach, equating the solar system to a gigantic generator. He thought of the planets as magnets. The planets are, in fact, gigantic bar magnets, and they're moving. That's why the effect of the planets upon the sun is cyclical and not steady like a generator. That's what you'd expect. I tend to think that the cause is a combination of electromagnetism and gravitation. Einstein worked for half of his life on combining these two forces in his unified field theory. « 

» To calculate the Astro Method Indicator I first look up each planet's heliocentric longitude in the Astronomical Almanac published by the U.S. Naval Observatory. Then I subtract the lanets' longitudes from each other, plot those values on a chart, and connect the dots. Every combination of the nine planets makes 36 cycles. The value of these cycles ranges from 0° to 180° (two planets are never more than 180° apart). For example, if Jupiter's longitude were 120° on January 1 and Saturn's longitude were 140°, I'd enter a dot on a graph on January 1 at 20°. Then I'd do the same calculation for the next day, and the next day, and so on. Then I'd connect the dots to form that cycle line. I would do this for every other planetary relationship for as many days or years as I wish to calculate, depending upon the time frame I wished to study. « 

» The Astro Indicator doesn't forecast turns in commodity prices very well. Those markets are more dependent on the actual supply and demand of the particular commodity, rather than on psychology. However, on a longer-term basis, I've studied the relationship between commodity prices and the solar cycle, and there's absolutely no question in my mind that commodity prices are dominated by the 11-year solar cycle. I've studied the correlation since 1873. Commodity prices peak at solar maximum and bottom at solar minimum. It's weather related. « 

» The stock market is a barometer of mass psychology. If you really think about it, it boggles the mind. The stock market is a single place where millions of people go to play with their money. What better barometer of human mass psychology could there be than the stock market? The next time you read a stock market commentary, make an effort to filter out the psychological adjectives. Words like optimism, fear, and anxiety are everywhere. And the tides that move men are intractable. The Astro Indicator works, and it will always work. Because it's based on the inextricable link between Man and Nature. « 

 

Reference:
Jeffrey H. Horovitz & Richard Tourtellott (1988) - Planetary Harmonics. An Exclusive Interview with Larry Berg. 

In: Cycles, January/February 1988, Foundation of the Study of Cycles.

 

How to calculate the Astro Indicator: All calculations and charting was done by hand when I first began my work.  I have since developed software spreadsheets using Excel which calculate BT automatically in seconds which previously took me several days to do by hand.

We'll go through every step here and do one week of the indicator.  You can, of course, do as much time at once as you want when you start doing it yourself.  However, we're dealing with lines here that have to be seen well, so the smaller the time scale the better.  The process will take some getting used to in the beginning.  Even with a computer to help in the calculations, it takes about an hour to do one month.  Once you get the hang of it though you should be able to do one year in about 2 days.  And of course you can go as far as you want into the future as you want, data availability permitting. The heliocentric ephemeris I use is the one published each year by the U.S. Naval Observatory called the Astronomical Almanac (called the American Ephemeris and Nautical Almanac prior to 1981).  Most university and public libraries should carry it in the government documents department.  There are sources for heliocentric data further out than one year, probably at a local astrology book store.  And there are many online sources for this data, some provided in the Links section.

Figuring the cycles: The first thing to do is get the Astronomical Almanac (for longitude data online visit: https://ssd.jpl.nasa.gov/tc.cgi#top.  Here, I'll do the time discussed previously--January 11 to January 17, 1973.  I always like to copy the pages I need rather than use the whole book.  It's much easier working with separate pages than a whole book, especially since you often have to shuffle from page to page.

The Julian Date is a scientific number denoting the date.  Latitude is not used.  Latitude refers to the degrees the planet is north or south of the solar equator. Radius Vector, Orbital Longitude, and Daily Motion are also not used.  We only use Longitude.

First we calculate and plot all the planet cycles except Mercury.  Mercury is done separately because it moves so fast and would cause chaos if we added it with all the other planets together.  Listed below are each of the planet cycle relationships we'll now calculate and plot.  I suggest scratching them off as they're done.  This is important so you don't forget what you've already done:

Venus-Earth       Earth-Mars       Mars-Jupiter      Jupiter-Saturn     Saturn-Uranus
Venus-Mars        Earth-Jupiter     Mars-Saturn     Jupiter-Uranus     Saturn-Neptune
Venus-Jupiter     Earth-Saturn     Mars-Uranus     Jupiter-Neptune  Saturn-Pluto
Venus-Saturn     Earth-Uranus     Mars-Neptune   Jupiter-Pluto
Venus-Uranus    Earth-Neptune   Mars-Pluto       Uranus-Neptune
Venus-Neptune   Earth-Pluto       Uranus-Pluto
Venus-Pluto       Neptune-Pluto

There are 28 cycles here.  Mercury will add another 8 making a total of 36 cycles in all.  

First make a graph with the horizontal 'x' axis divided into six equal sections for Jan 11-17.  The vertical 'y' axis should be divided into 180 degrees with 180 at the top.  Graph paper should be used that has enough horizontal lines to represent each of the 180 degrees.  The paper should be large enough to be able to distinguish 180 vertical points, which might mean a sheet of a size substantially larger than 8 1/2 x 11.  The size depends on what kind of graph paper you find available.  However, the larger the better.  The larger it is the easier it will be to work with and see what you're doing.  You'll also need a mechanical pencil with thin lead, the thinner the better (I use .5mm) and a metal straight-edge.  Wooden rulers get dirty and their edge wears out.

Drawing the cycles: The difference between Venus and Earth longitudes (238.9 minus 110.6) is 128.3 degrees.  So on the graph we'll place a reference dot on Jan 11 at 128.3 degrees.  We do this calculation for each day for Venus-Earth and get seven dots.  Connect the dots.  That line is the cycle line representing the heliocentric longitudinal distance between Venus and Earth for the period.

This same process is then done for each of the remaining 27 planetary cycles listed above.  So next find the difference between Venus and Mars longitudes for each day.  Then plot those values on your chart and connect the dots. There are certain "rules of the road" to observe while doing the calculations:

■ If you subtract two of the longitudes of the planets and you get a number greater than 180, subtract that number from 360 to get the right number to plot.
■ If you subtract two of the longitudes of the planets and you get a number less than 0 but greater than -180, multiply that number by -1 to make it positive.
■ If you subtract two of the longitudes of the planets and you get a negative number less than 180, add 360 to get the right number to plot.
■ Simply put, the product of subtraction of two longitudes should always be between 0 and 180 for plotting.

 

Now Mercury has to be done, on a new graph.  The 8 cycles for Mercury are:

Mercury-Venus     Mercury-Jupiter     Mercury-Neptune
Mercury-Earth     Mercury-Saturn     Mercury-Pluto
Mercury-Mars     Mercury-Uranus

When the graph is finished you should have eight lines drawn.

Counting the Intersections: This is the fastest, simplest, and most rewarding part of the project.  As you count the intersections you'll start to see how planetary angle harmonics take form.  You'll now be, essentially, seeing into the future.  In front of you will be an indicator which will tell you when the coming weather and stock market reversals will occur, when hurricanes will be generated, when an El Nino will occur, when wars are likely.  You're now seeing the future tides of nature unfolding with cold scientific exactness, measurement, and calculation.  You're now doing what innumerable cultures have crudely been doing since man first walked the earth and attempted to measure time and the seasons.  I kinda laught to myself when I think 'what else did they have to do at night'?  

This is the new Macro Astrology . . . the forecasting of weather and atmospheric system movements, times of geological disturbances, peculiarities of human and animal behavior, even times when viruses and bacteria are more active and abundant.  Down through time, astrologers have satisfied themselves with following only six, ten, or maybe twenty planetary alignments in their work.  Here you are looking at all possible planetary angle harmonics which is able to forecast the ebb and flow of all natural phenomena.

You've probably noticed by now that there are times in the charts when all the cycles converge at one time.  These are times of strong planetary harmonics.  What we simply do now is count the number of intersections between the lines that occur each day, that is, the number of times any two cycle lines cross during each day.  Make a simple bar chart, divided into each day, and add up the number of intersections occurring each day.

We'll start with the 28-cycle sheet.  On Jan 11 there was 1 intersection made.  So on your graph paper make a bar chart indicating 1 for Jan 11.  On Jan 12 there were 0 intersections, so leave Jan 12 blank on your bar chart.  On Jan 13 there were 0 intersections.  On Jan 14 there were 11 intersections, so put a bar line 11 high for Jan 14 on your bar chart.  On Jan 15 there was 1 intersection.  On Jan 16 there were 3 intersections.

You probably want to know how I counted the intersections when four cycle lines came together all at once on Jan 14.  There are "laws of intersection".  Two cycle lines coming together can only make one intersection, obviously.  Three cycle lines coming together make three intersections. However, four cycles coming together make six intersections and five cycles together make ten intersections.  So when four of the cycles came together on the 14th, six intersections were made.

Now we add the Mercury intersections to this bar chart.  Based on the 8 Mercury Cycles Graph, Jan 11 has one intersection and Jan 15 has one intersection.  Done.

This is the complete Astro Indicator Methodology. 

 

Reference:

Larry Berg (2024) - The Berg Timer™, its History and Calculation.

The Art of Forecasting Wheat Prices Using Harmonic Cycles | L.H. Weston

Numerous attempts have been made during the past century to find a fairly reliable method for determining, long in advance, the probable price of wheat and grain in general [...] We have a wheat record that runs back, upon unimpeachable authority, for several hundred years, the one given in this booklet beginning in the year 1270 and running up to present time, with years as the unit of time, and it would indeed be strange if, with such a record, we could not pick out the useful cycles in it, providing any such cycles really do exist [...] That there are recurring cycles of movement in nearly all, if not, indeed, absolutely all natural phenomena, there is now no longer any reasonable doubt. No scholar of the day, no scientist, no investigator of these times, would for a moment argue against this well established fact.

 

[...] In the following pages I give the recorded mean price of wheat for each year in England from the year 1270 to 1909, in both a table and a diagram. Also, in a diagram, the monthly mean price of wheat at Chicago and Cincinnati from 1844 to present date. Special charts are also given to illustrate the explanations regarding the method of forecasting by means of cycles. By means of these tables and charts I show in this work how a forecast of the wheat market can be made up for over 40 years. In fact, I chart the forecast in advance over 10 years, for the benefit of readers and students. It is done just as proposed above, namely, by first proving that the harmonic cycles really do exist in the records, and then carrying them on into future years. The calendar year is used as the unit of time (or the calendar month) and therefore the forecasting, as taught, is necessarily of the long swing movement. 

 

 

 

[...] On page 27 is given the table of composite and harmonic values in the 49-year cycle. That composite is, as before stated, the result of eleven cycles added together, while the harmonic values are merely the smoothed curve of this same composite, and both are charted together on page 26. 

 

[...] This result is given in the Composite Chart of the 49-year cycle and it is the one used as the basis of all forecasting. If we examine the composite chart with some attention we will find that there are just about eight places where tops come out and likewise there are eight bottoms. Eight into 49 goes 6.125 times, so it seems very much as though the famous 7-year cycle of the ancient Jews was in reality about six and one-eighth years instead of 7. It is the eighth harmonic that gives the best results in the 49-year cycle, instead of the seventh.

Quoted from:
L.H. Weston (1923) - The Art of Forecasting Wheat Prices by the Use of Harmonic Cycles.

 

See also:
Hans Hannula (1993) - Gann's Greatest Secret: L.H. Weston - Gann’s Professor.
L.H. Weston (1921 & 1923) - Being a Treatise on the Geometrical or Chart System of Forecasting in which is explained the principles of the art, and, in this lesson no. 1, giving demonstration with the price curve of potatoes in the U.S.  

Harmony of the Spheres | Dance of the Planets

James Ferguson’s (1710-1776) representation of the apparent motion of the Sun, Mercury, and Venus from the Earth, based on similar diagrams by Giovanni Cassini (1625-1712) and  Roger Long (1680-1770). Taken from the "Astronomy" article in the first edition of the Encyclopædia Britannica (1771; Volume 1, Fig. 2 of Plate XL facing page 449). This geocentric diagram shows, from the location of the Earth, the Sun's apparent annual orbit, the orbit of Mercury for 7 years, and the orbit of Venus for 8 years, after which Venus returns to almost the same apparent position in relation to the Earth and Sun. In Arabic, Venus is called “El Zahra” - the flower. See HERE + HERE + HERE + HERE

Earth - Mercury Cycle.
This and all following graphics by John Martineau.

Earth - Venus Cycle:
Earth = 8 years x 365.256 days/year = 2,922.05 days
Venus = 13 years x 224.701 days/year = 2,921.11 days (ie. 99.9%)

Earth - Mars Cycle.

Earth - Jupiter Cycle.

Saturn - Uranus Cycle.

Jupiter - Saturn Cycle.

Venus - Mars Cycle.

The radius of the Moon compared to the Earth's is 3:11

Radius of Moon = 1,080 miles = 3 x 360
Radius of Earth = 3,960 miles = 11 x 360 = 33 x 1 x 2 x 3 x 4 x 5
Radius of Earth plus Radius of Moon = 5,040 miles = 1 x 2 x 3 x 4 x 5 x 6 x 7 = 7 x 8 x 9 x 10
The ratio 3:11 is 27.3%, and the orbit of the Moon takes 27.3 days, which is also the average rotation period of a sunspot. The closest to farthest distance ratio that Venus and Mars each experiences in the Mars-Venus dance is also 3:11. The Earth orbits between them. The sizes of the Moon and the Earth is drawn to scale in the last illustration above, where the perimeters of the dotted square and the dotted circle are of the same length: The perimeter of the dotted red square is 4 x Earth’s diameter = 4 x 7,920 miles = 31,680 miles. The circumference of the dotted blue circle is 2 pi x radius = 2 x 3.142 x 5040 miles = 31,667 miles (ie. 99.9%).

The Measure of the Circle | Math for Mystics # 2

Pi (π) is the ratio of the circumference of a circle to its diameter. 
As a fraction, its closest approximations are 22/7, 333/106 and 355/113.

Projection on the plane of the ecliptic of the parabolic
orbits of 72 comets, 1802. Engraving by Wilson Lowry after
Johann Elert Bode.

Circle of Fifths, and relationship of relative
minor keys to major key signatures.

 

"The circle is one of the noblest representations of Deity, in his noble works of human nature. It bounds, determines, governs, and dictates space, bounds latitude and longitude, refers to the Sun, Moon, and all the planets, in direction, brings to the mind thoughts of eternity, and concentrates the mind to imagine for itself the distance and space it comprehends. It rectifies all boundaries; it is the key to information of the knowledge of God; it points to each and every part of God's noble work."

John Davis (1845): The Measure of the Circle [p. 12].

The "Law of the Octave": The World Is Sound | Joachim-Ernst Berendt

According to the "Law of the Octave" the duration of a planet's rotation, that is, the time a celestial body takes to revolve around its own axis and/or the time it needs for one orbit around the Sun, can be transposed into tones and colors. The tones and colors are analogous to rotation and revolution. In order to arrive at the frequency in Hertz (vibrations per second) from an astronomic period, the reciprocal value has to be formed of the duration (expressed in seconds).

 

[...] The Earth, for instance, has a rotation period of 24 hr, or to be more precise, of 23 hr. 56 min, and 4s, totaling 86,164s. If one takes the reciprocal value, that is, divides 1 by this number, a frequency of 0.00001160577 (an inaudible G) is obtained. Though this G is below the hearing range (which starts at about 16 Hz). transposing it by 24 octaves will create an audible G. 

[...] Tones exist, whether we hear them or not. Any music lover knows that a melody can resound within even when it is not being played. A composer hears the music within while notating it and before any sound has been made. For this reason, transposing by octaves is a legitimate process. Even scientists are using it (for instance, to transpose sound of deep sea fish and bats from the ultrasonic range into human audibility or to better understand signals of pulsars and other stars). 

 

The octave (1:2) is the most frequent relationship in the universe - not only in music, but anywhere in nature, from the micro- to the macro-cosmos. We use the same names for tones that are octaves apart [...] When a cell divides in mitosis, it chooses the "position" of the octave. The result is the "same cell" again. An octave may vibrate at twice or half the rate (or in powers of two or one-half) but it still is the same tone. It may split the one in two parts or double it, and the result is the same again. Its frequency may be completely different from the basic tone, many Hertz above or below it, but the result is still the same tone again. The octave is the most convincing symbol of unity that we can find in nature. And in nature, it is omnipresent.

[...] Because the "Law of the Octave" is universal, one can continue transposing by octaves to reach the electromagnetic vibrations of colors. From the tone of the Earth (194.71 Hz) another 36 octaves are required to reach 700.16 Nm (Nanometer), which is analogous to the color of orange-red (also analogous to the tone G and to the rotation of the Earth around the Sun). However, the range of human vision is limited to only one octave compared with the ten octaves of the hearing range.

 

[...] The tone of the Earth is the most important tone for all living beings on this planet, whether we leave it inaudible or make it audible by transposing it into higher octaves. It is with this tone that we rise in the morning and go to bed at night; to this tone we do our work, we get hungry, and we love. But other planetary vibrations and tones, especially those of the Sun, the Moon, Venus. Mars, and Jupiter, also vibrate directly into our earthly existence. This is why I call them primordial tones.

 

[...] For millions of years, longer and more steadily than any other comparable vibration, the Earth. Sun, Moon, and the planets have been vibrating in cosmic space. Our genes and those of all living beings have experienced these vibrations so often that the processes and mechanisms of genetic programming must have stored them long ago. 

 

[...] The period from Full Moon to Full Moon (the "synodical month") lasts 29 days, 12 hr, 44 min and 2.8s; a total of 2,551,442.8s. In order to transpose the corresponding frequency into the average range of human hearing, we have to transpose it by 30 octaves. The result is a tone of 420.837 Hz (G sharp), a tone of no great importance to our Western music today, but during the Baroque and early Classical periods, it was of major importance.

 

 Sound, Light, Color, Heat = Different Manifestations of Energy.

 

Mozart's tuning fork, for example, had 421.6 Hz. At its pinnacle, Western music was directly connected with the tone of the Moon. Concert pitch started to rise in the middle of the 19th century, striving for the superficial effect of making the music sound brighter. Thus Western music started to turn away from the moon's field of resonance, but the Moon, in all traditions, is responsible for the arts and the artists, being the planet of sensitivity and creativity. In the 20th century, major American symphony orchestras kept raising the concert pitch tone more and more. In doing this, they have banished Western music from its cosmic relationship to the celestial body of the arts and the artists.

[...] The tone of the Sun results from the tropical year lasting 365.242 days or 31,556,926s, and it is C sharp. We can hear it at 136.10 Hz. In Indian classical music, this C sharp is still the fundamental tone. It is called sa or sadja, the "Father of Tones." Bells (e.g., temple bells and gongs) are often tuned to this tone, not only in India but also in Tibet, Japan, and on Bali. The prime word OM, the holiest of mantras, has been chanted to the sa more often than to any other tone. Today classical Indian music remains in a relationship to the Sun, as Western music of the Baroque, Classical and Early Romantic periods was formerly in relationship to the Moon.

 

Quoted from:
Joachim-Ernst Berendt (1987) - Primordial Tones: Meditation on the Archetypal Energies of Celestial Bodies.

See also:
Joachim-Ernst Berendt (1991) - The World Is Sound: Nada Brahma.