If you scroll through social media for long enough, you’ll probably find videos claiming that listening to songs tuned to “A 432Hz” can provide an amazing sense of calmness or healing.

It’s even claimed that listening to music tuned to this frequency can align your internal frequencies to those of the universe. It’s an alluring idea — that simply listening to music tuned in a specific way could improve your health.

But does it have any scientific basis?

An ancient idea

Firstly, what does it even mean if songs are tuned to A 432Hz?

Hertz (or Hz) is a measurement of frequency, or the number of times sound waves vibrate per second. Sounds are transmitted as waves through the air, which hit our eardrums to create the sensation of hearing. The more quickly those sound waves are vibrating, the higher the pitch of the note.

In standard concert tuning, the note A above middle C is tuned to 440Hz. A 432Hz tuning simply means the pitch of that A and all the other notes in the music are tuned a little lower than normal.

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