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The 528 Hz Claim

Two chairs

In 1974 a chiropractor said he found six sacred tones hidden in Bible verses. By 1999 a book called 528 Hz the frequency of love and DNA repair. Medieval monks never measured in hertz.

The question

In 1999, Leonard Horowitz and Joseph Puleo published Healing Codes for the Biological Apocalypse, naming six 'Solfeggio frequencies' — including 528 Hz, the 'love frequency' — that Puleo said he found using numerology on the Book of Numbers in 1974. They called it the tuning behind Gregorian chant. Did medieval monks ever sing in hertz?

Round 1
The chair for 528In 1974, Joseph Puleo said a Pythagorean reading of the Book of Numbers revealed six sacred tones, among them 528 Hz — a code hidden in scripture, waiting to be found.
The chair that trusts the recordHertz as a unit didn't exist until centuries after Gregorian chant was sung; monks had no way to sing, or measure, a tone in 528 Hz.
Round 2
The chair for 528In 1999, Horowitz and Puleo's book named 528 Hz the 'frequency of love,' claiming it could repair damaged DNA and undo the harm of standard tuning.
The chair that trusts the recordNo peer-reviewed study has shown 528 Hz repairs DNA. Cells have no known way to sense a specific audible pitch, let alone rewrite base pairs from it.
Round 3
The chair for 528Believers tie the six tones to Guido d'Arezzo's medieval hexachord, ut, re, mi, fa, sol, la: the same syllables that still start every solfège lesson.
The chair that trusts the recordGuido's syllables are real and eleventh-century. The frequencies aren't: no chant, hymnal or historical record ties his notes to 396, 417, 528 or any hertz value at all.
Where are you sitting?
The chair for 528The chair that trusts the recordNeither — I’m still listening
Held open

What's checkable: Guido d'Arezzo's medieval solfège, and Horowitz and Puleo's 1999 book naming 528 Hz. What isn't: any historical link between the two, or that the frequency repairs anything. That claim is theirs, not medicine's.

Sing the syllables. The hertz came centuries later.
scroll to hear both
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