Traditional / experimental practice
528 Hz: tradition and evidence
A traditional or spiritual practice, not a scientific claim.
Where does it come from?
The medieval solfège syllables (ut, re, mi…) are real music history, but today's list assigning hertz values to them is a modern interpretation, popularised by a non-peer-reviewed book published in 1999. In that list 528 Hz corresponds to "mi".
What did studies find?
In a small study, salivary cortisol fell and tension scores decreased after 528 Hz music; randomisation and blinding were not reported. In a randomised trial with students in Türkiye some salivary biomarkers changed, but attention-test performance did not. What these changes mean in everyday life is unclear, and the findings have not been independently replicated.
528 Hz in Frekans Studio
The 528 Hz session is in the Explore section and carries a ✦ T (traditional practice) strip. We offer it as a listening ritual and make no health claim.
What does the evidence say?
There is one small study and one biomarker trial; it has not been reliably shown that 528 Hz reduces stress.
■ D · Insufficient evidence- What do we know?
- In a small 9-person study, salivary cortisol fell and tension scores decreased after 528 Hz music; randomization and blinding were not reported. In a randomized trial with 162 students in Türkiye, 528 Hz music raised salivary BDNF and CREB.
- What don't we know?
- What these biomarker changes mean for everyday stress is unclear; attention-test performance did not differ between groups in the same trial. The findings have not been independently replicated.
A modern spiritual interpretation; not a scientific claim.
✦ T · Traditional/spiritual practice- What do we know?
- Medieval solfège syllables (ut, re, mi…) are real music history. Today's list assigning Hz values to them is a modern spiritual interpretation, popularized by a non-peer-reviewed book published in 1999. Lists vary between sources: some count six tones, others nine.
- What don't we know?
- The meanings given to the tones have not been scientifically tested, and different sources assign different meanings.
Evidence levels and sources come from the database; the article adds no new claims. Evidence methodology
Frequently asked questions
- Are the meanings attached to 528 Hz true?
- That is a spiritual interpretation; the meanings attached to the tones have not been scientifically tested, and different sources attach different meanings.
- How can I listen to 528 Hz?
- Use the 528 Hz session in Explore or the tone generator. Keep the volume low and comfortable.
Listen and try
Last updated: 1 October 2026 · This article is for information only; it is not medical advice.