Play your music in 528 Hz
Hear the music you already love in 528 Hz. 432 Player retunes it live as it plays: your own files, 30,000+ radio stations, and Spotify or YouTube with the browser extension.
check_circle Plays in the browser. No account, nothing to install.
Tap "440Hz original" and back to hear the difference.
528 Hz and A=444 are the same tuning
They are two names for one thing, taken from different notes. Set the A above middle C to 444 Hz and the C above it lands on 528.01 Hz. Musicians tend to name a tuning by its A; the Solfeggio tradition names this one by its C. Nothing else changes.
The shift from standard pitch is about 16 cents, roughly a sixth of a semitone. It is a gentle lift rather than a transposition. The song stays in its key, and every note moves together.
In the app, this tuning is listed as A=444, because 432 Player names tunings by their A note. It is the same tuning as 528 Hz.
For comparison, 432 Hz tuning moves about 32 cents the other way. If you know 432, expect 528 to be subtler and a little brighter.
Three ways to hear it
- Radio, right now. 30,000+ stations retuned as they stream. No files, no account, nothing to install. The player above is that player, running now.
- Your own library. Add MP3, FLAC or WAV files and hear them in the tuning you choose. Your files stay exactly as they are: no copies, and on Android and in the web player's Pitch mode the tempo stays the same.
- Spotify, YouTube and Apple Music. The browser extension retunes the audio in the tab as it plays. Nothing is downloaded.
432 Hz is free in the Android app, the web player and the extension. The web player also includes 396 Hz and 174 Hz for free, and the extension unlocks 528 Hz with a free account; in the Android apps, the web player and the converters 528 Hz is a Pro feature. One Pro purchase covers the web player, the converters and the extension; the Android apps sell their own Pro in Google Play. The player above plays 528 Hz for free, so you can listen before you decide.
Where 528 Hz comes from
The six Solfeggio frequencies were published in 1999, in a book by Leonard Horowitz and Joseph Puleo, which says Puleo worked the numbers out in the 1970s by applying Pythagorean digit reduction to the verse numbers of Numbers chapter 7. The syllables (Ut, Re, Mi, Fa, Sol, La) really are medieval, from the hymn "Ut queant laxis". The frequencies are not: medieval chant had no fixed pitch reference at all, and the hertz did not exist as a unit until centuries later.
You will also find pages claiming 528 Hz does things to the body. We do not make those claims and we do not need them. What is true is checkable: the shift is real, it is about 16 cents, every note moves together, nothing is re-encoded, and you can switch back in one tap.
The tuning is the same whichever story you believe about it. Play it and decide.
Questions
Yes. A=444 Hz tuning places C at 528.01 Hz. 528 Hz music and A=444 music are the same tuning, named from different notes.
No. The tuning is applied while the audio plays. Your files are never modified. On Android and in the web player's Pitch mode, the tempo is unchanged.
Yes, with the browser extension, which retunes the audio playing in the tab. You cannot convert Spotify files themselves, because they are never downloaded.
About 16 cents, a sixth of a semitone. It is a gentle lift. For comparison, 432 Hz moves about 32 cents in the other direction.
There is no good evidence that it does, and we make no health claims. It is a listening preference. The tuning change itself is real and measurable.
They move the pitch in opposite directions: 432 Hz is about 32 cents down and warmer, 528 Hz (A=444) is about 16 cents up and brighter. 432 Hz is the free default, so most people start there and try 528 Hz on the same track. You can switch in one tap.
528 Hz is free with a free account in the browser extension; in the Android apps, the web player and the converters it is a Pro feature. 432 Hz is free in the Android app, the web player and the browser extension, and the web player also includes 396 Hz and 174 Hz for free. One Pro purchase covers the web player, the converters and the extension; the Android apps sell their own Pro in Google Play. The radio player on this page plays 528 Hz for free, so you can listen before you decide.
Hear it for yourself
The player at the top of this page is 528 Hz, live, with no account. Play it, then take the same tuning to your own music.
Or open the web player to play your own files at 432 Hz free.