528 Hz: listen, then see what’s real
A pure 528 Hz tone, the “love frequency” of the Solfeggio set. Where the claims come from, what’s been tested, and what it draws on a real plate.
The buttons switch between the six Solfeggio tones. Start quiet: pure tones sound louder than you expect.
Opens the Lab’s Chladni plate at 528 Hz.
Where 528 Hz comes from
TraditionThe six “Solfeggio frequencies” (396, 417, 528, 639, 741 and 852 Hz) come from Joseph Puleo, who said he decoded them from verse numbers in the Bible’s Book of Numbers. He and Leonard Horowitz published them in the 1999 book Healing Codes for the Biological Apocalypse, which calls 528 Hz the tone that repairs DNA; it has since become known as the “love frequency”[1]. Despite the name, they aren’t the notes of medieval solfège (ut, re, mi…), which had no fixed pitch in hertz.
What’s been tested
StudiesOnly small studies. A 2018 study of 9 adults found lower levels of the stress hormone cortisol 30 minutes after 5 minutes of piano music tuned to 528 Hz than after the same music at 440 Hz[2]. A 2017 lab study on brain cells grown in a dish and damaged with alcohol reported less cell death in cells exposed to 528 Hz sound, at one of the sound levels it tested[3]. The DNA-repair claim hasn’t been tested in people.
What 528 Hz draws on a real plate
MeasuredThese come from the Lab’s plate simulator: a 24 cm aluminium square bolted at its centre. See the Chladni plate guide for how it’s checked.


Same frequency, two plates, two different figures. On the thinner plate 528 Hz sits near a resonance at 517 Hz; on the thicker one it’s near 502 Hz. There’s no special “528 shape”. The striking 528 Hz figures in videos happen because someone used a plate, or a dish of water, where 528 lands on a resonance.
Calm Week
Seven short sessions for a quiet break, with beats and tones side by side. Day 1 is free.
Questions
Is 528 Hz really the love frequency?
That name comes from the Solfeggio tradition, not from a measurement. If 528 Hz feels good to you, that’s a fine reason to listen.
Does 528 Hz repair DNA?
No study has shown that in people. The claim comes from the 1999 book; the only related lab work is the small cell-culture study above.
Can I hear all the Solfeggio tones here?
Yes: the buttons under the play button switch between all six. The Lab also has Solfeggio 528 and Cousto 136.1 sessions with visuals.
Sources
- Horowitz LG, Puleo J. Healing Codes for the Biological Apocalypse. Tetrahedron Publishing (1999).
- Akimoto K, Hu A, Yamaguchi T, Kobayashi H. Effect of 528 Hz music on the endocrine system and autonomic nervous system. Health 10(9):1159–1170 (2018). doi:10.4236/health.2018.109088
- Babayi T, Riazi GH. The effects of 528 Hz sound wave to reduce cell death in human astrocyte primary cell culture treated with ethanol. Journal of Addiction Research & Therapy 8(4):335 (2017). doi:10.4172/2155-6105.1000335