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963 Hz

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Origin 963 Hz was published as an extension to the Solfeggio set, beyond Horowitz and Puleo's original six, circulated in later New Age and sound-healing literature that traces its own numerology to their 1999 book Healing Codes for the Biological Apocalypse. It is not attested in any older musical or scientific source, and the atlas's separate origin-period dates for concert pitch standardisation describe an unrelated development.

963 Hz is one of three later additions to the Solfeggio frequencies, alongside 174 Hz and 285 Hz, appended after the original six tones the American naturopath Dr. Joseph Puleo said in the 1990s he derived numerologically from a table of Bible verse numbers and Dr. Leonard Horowitz popularised soon after. Advocates describe it as the highest tone in the set, associated with oneness and connection to the divine. Unlike the original six, no numerological derivation from Bible verse numbers is claimed for 963 Hz specifically, since it was added to the list later by other authors within the same alternative wellness literature. As with every tone in the set, its claimed effects are not established in acoustic or medical science.

Facts
Debunked
Origin Period
1917 to 1975 2Tradition: Modern sound healing: the Solfeggio frequencies
ISO 16:1975, Acoustics, Standard Tuning Frequency (Standard Musical Pitch) (International Organization for Standardization, 1975) is the international standard that fixed concert A at 440 Hz, the first globally agreed reference pitch in the instrument's history. Before that kind of agreement existed, documented historical tuning practice put concert A anywhere from about 415 Hz to over 460 Hz depending on period, region and instrument maker. Comparing that documented range against the eleventh century, when Guido of Arezzo's chant tradition is set, the standard shows no reference pitch existed then against which to measure any tone, so a chant of that period cannot be assigned a hertz value such as 528 Hz at all. The claimed date is set aside because the unit it is expressed in did not yet have a fixed meaning.
Origin of the Name
The name is taken from solfeggio, the European system of singing syllables, ut, re, mi, fa, sol, la, which Guido of Arezzo drew in the eleventh century from the opening syllables of successive lines of the hymn Ut queant laxis. Guido's syllables name positions within a hexachord. They are relative pitch and carry no frequency. 3
The New Grove Dictionary of Music and Musicians (Stanley Sadie and John Tyrrell, eds., 2nd edition, Macmillan, 2001) documents Guido of Arezzo's eleventh-century solmisation system, the evidence offered for the claim that the Solfeggio set preserves the tuning of medieval chant. Guido's system assigns a syllable, ut, re, mi and so on, to a position within a hexachord, a relative relationship between notes, not a number of vibrations per second; a singer using it began wherever their voice was comfortable, with no fixed reference pitch at all. Comparing that documented medieval practice against the modern claim, nothing in Guido's system fixes any syllable to any frequency, and the hertz itself is a unit defined in the nineteenth century and named after the physicist Heinrich Hertz, born in 1857, centuries after Guido. The name trades on a real medieval system's prestige without carrying forward anything it actually specified.
Contested or Appropriated Modern Use
Nothing here is medical advice or a treatment for any condition 4
Olav Hammer's Claiming Knowledge: Strategies of Epistemology from Theosophy to the New Age (Brill, 2001) examines the claim, common to Solfeggio tone marketing, that listening to a stated frequency repairs DNA. No study demonstrates this mechanism, and Hammer's analysis of how modern esoteric movements build authority identifies the borrowing of scientific-sounding vocabulary, frequency, hertz, resonance, DNA, as a documented rhetorical strategy for lending a teaching the appearance of scientific support rather than a real finding about sound. That a listener finds a given tone calming is a separate, subjective claim the atlas does not dispute; the DNA-repair mechanism specifically is what this property records as unsupported.
Contested or Appropriated Modern Use
The atlas records that the claims are made within a modern therapeutic movement and attributes them to it; it does not record them as facts 4
Olav Hammer's Claiming Knowledge: Strategies of Epistemology from Theosophy to the New Age (Brill, 2001) examines the claim, common to Solfeggio tone marketing, that listening to a stated frequency repairs DNA. No study demonstrates this mechanism, and Hammer's analysis of how modern esoteric movements build authority identifies the borrowing of scientific-sounding vocabulary, frequency, hertz, resonance, DNA, as a documented rhetorical strategy for lending a teaching the appearance of scientific support rather than a real finding about sound. That a listener finds a given tone calming is a separate, subjective claim the atlas does not dispute; the DNA-repair mechanism specifically is what this property records as unsupported.
Contested or Appropriated Modern Use
These tones are sold and streamed with claims of physical and psychological benefit 4
Olav Hammer's Claiming Knowledge: Strategies of Epistemology from Theosophy to the New Age (Brill, 2001) examines the claim, common to Solfeggio tone marketing, that listening to a stated frequency repairs DNA. No study demonstrates this mechanism, and Hammer's analysis of how modern esoteric movements build authority identifies the borrowing of scientific-sounding vocabulary, frequency, hertz, resonance, DNA, as a documented rhetorical strategy for lending a teaching the appearance of scientific support rather than a real finding about sound. That a listener finds a given tone calming is a separate, subjective claim the atlas does not dispute; the DNA-repair mechanism specifically is what this property records as unsupported.
Origins
Origin PeriodSourced to the subject's own account
963 Hz was published as an extension to the Solfeggio set, beyond Horowitz and Puleo's original six, circulated in later New Age and sound-healing literature that traces its own numerology to their 1999 book Healing Codes for the Biological Apocalypse. It is not attested in any older musical or scientific source, and the atlas's separate origin-period dates for concert pitch standardisation describe an unrelated development. 1
Learn More
963 Hz, the Crown Tone

963 Hz is the highest tone in the extended set of Solfeggio frequencies, one of the three, with 174 and 285, added after the original six, and in the sound-healing literature it is associated with the crown centre and with "divine consciousness", unity and the highest spiritual connection, the summit of the ascending ladder of tones.

The Solfeggio frequencies are a modern phenomenon throughout: the core six were assembled by Joseph Puleo in the late twentieth century and popularised from 1999, the fuller nine-tone version later, and the whole set derives from a numerological procedure rather than from any ancient or medieval musical practice, the solfege name notwithstanding, since the medieval scale used no fixed hertz pitch. The arrangement of the tones as a rising series mapped onto the seven chakras joins two separate modern esoteric schemes. There is no scientific evidence for the claimed effects, and nothing in this description constitutes medical advice or a therapeutic claim; it reports the beliefs of a modern sound-healing tradition.

Sources Healing Codes for the Biological ApocalypseLeonard G. Horowitz and Joseph S. Puleo with Claiming Knowledge: Strategies of Epistemology from Theosophy to the New AgeOlav Hammer

Where 963 Hz Came From

The Solfeggio set is not ancient, and its own literature is fairly open about where it comes from. The nine tones were put into circulation by Joseph Puleo and Leonard Horowitz in Healing Codes for the Biological Apocalypse, published in 1999, where they are presented as recovered from the medieval Latin hymn Ut queant laxis by a numerological procedure. The hymn is real and important: Guido of Arezzo took the first syllable of each of its lines in the eleventh century to name the notes of the hexachord, which is why the syllables ut, re, mi, fa, sol and la exist at all.

The structure of the set is arithmetic, and 963 Hz shows it clearly. Its digits sum to 18, and reducing that gives 9; every tone in the nine reduces to three, six or nine, and no other value appears. The tones also fall into triads a hundred and eleven apart: 741, 852 and 963. That pattern is the reason the set has the members it has. It was chosen for its numerology, which the source is explicit about, and not derived from any measurement.

Two problems sit under the ancient claim, and neither is a matter of opinion. The hymn carries no frequencies: medieval music had no absolute pitch standard, singers pitched to a comfortable range, and the idea of tuning a note to a fixed number of cycles per second is a later development. The hertz itself is a nineteenth century unit, named for a physicist born in 1857, so a number in hertz cannot have been handed down from an eleventh century source. The therapeutic effects attributed to this tone belong to the 1999 book and to the literature that followed it. The atlas records the claim, and records who makes it.

Sources Healing Codes for the Biological ApocalypseLeonard G. Horowitz and Joseph S. Puleo with Western Plainchant: A HandbookDavid Hiley, ISO 16:1975, Acoustics, Standard tuning frequency (Standard musical pitch)International Organization for Standardization

Cross-Tradition Connections

Contained In

The Solfeggio Frequencies, Disciplines

One of the nine tones the set is made of.

Disciplines That Use This

Sound Healing, Disciplines

The solfeggio frequencies. The claims attached to them are attributed, not endorsed.

Source Tibetan Singing Bowls: Where Did They Really Come From?Tricycle Magazine
Sources
1. Healing Codes for the Biological Apocalypse
Leonard G. Horowitz and Joseph S. Puleo, Tetrahedron Publishing Group, 1999Origin of the modern Solfeggio set (cited for attribution only, not for any claimed effect)
2. ISO 16:1975, Acoustics, Standard tuning frequency (Standard musical pitch)
International Organization for Standardization, International Organization for Standardization, 1975ISO 16:1975, scope and specificationView the Source
3. The New Grove Dictionary of Music and Musicians, 2nd edition
Stanley Sadie and John Tyrrell (eds.), Macmillan, 2001Solmization; Guido of Arezzo
4. Claiming Knowledge: Strategies of Epistemology from Theosophy to the New Age
Olav Hammer, Brill, 2001ch. on the appeal to science in modern esoteric claimsView the Source
A History of Performing Pitch: The Story of 'A'
Bruce Haynes, Scarecrow Press, 2002Standardized pitch in hertz as a modern development, absent from medieval chant
Western Plainchant: A Handbook
David Hiley, Clarendon Press (Oxford University Press), 1993Guido of Arezzo and the hymn Ut queant laxis, source of the solmization (solfege) syllablesView the Source
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