Guide · evidence

Solfeggio frequencies: claims vs evidence

"528 Hz for transformation," "432 Hz for calm," "396 Hz to release fear", these labels are everywhere in manifestation audio. Where do they come from, and does the research support them?

Illustration of concentric rings labelled with hertz values

Updated 28 August 2026 · Reviewed against available research and music-history sources.

What they are

The modern "solfeggio" set, commonly listed as 174, 285, 396, 417, 528, 639, 741, 852 and 963 Hz, was popularised in the late 1990s, drawing on a numerological reading of a Latin hymn. Each tone was assigned a theme: grounding, change, "miracles/DNA repair," relationships, intuition, and so on. 432 Hz is a separate thing: an alternative tuning reference for the note A (instead of the standard 440 Hz), promoted as sounding "warmer" or "more natural."

Where the meanings come from

The specific claims, that 528 Hz repairs DNA, that 396 Hz releases guilt, are modern inventions from sound-healing culture and numerology, not from experiments or ancient practice. They are best read as symbolic intentions, similar to associating a colour with a mood.

What research actually shows

A handful of small peer-reviewed studies have reported effects of 528 Hz music on stress markers or subjective anxiety, and some listener-preference work on 432 Hz tuning. These studies are small, varied in method, and largely unreplicated. More broadly, music and slow, calm sound reliably support relaxation and mood, but that benefit is not specific to a magic number, and there is no robust evidence for the healing, detox or "DNA" claims.

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Solfeggio vs binaural beats vs theta audio

These often get blended in product marketing but are different ideas. A solfeggio track is just tones/music at a chosen pitch. Binaural beats use two slightly different tones to create a perceived pulse. Theta audio aims at a target brainwave rhythm. The honest common ground is that a calm track you enjoy, listened to regularly, can help you relax and focus, whichever label it wears.

Using frequency music sensibly

Choose tracks by how they make you feel, not by the number in the title.
Use them as a backdrop for a short daily practice, see a free seven-minute routine.
Don't pay a premium for a specific frequency; free versions are everywhere.
Don't rely on any track to treat a medical condition.

Relevance to The Last Wish

The Last Wish markets "sound frequencies said to be supported by research." Treat that the way you would any solfeggio label: the plausible benefit is relaxation and focus from calm audio, not a frequency-specific effect on your consciousness or finances. See the review.

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Our review covers what The Last Wish's "frequency" audio can and can't reasonably do.

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Reference resources

Entry points to the research and background behind this page: database searches and pages from PubMed, PubMed Central, Google Scholar, government health bodies and universities. These are starting points for the literature, not evidence that any single study proves The Last Wish works. Always read the primary source and check its methods and limitations.