Solfeggio frequencies from 396 to 852 Hz

Where do solfeggio frequencies come from?

The word solfeggio refers to the sol-fa singing syllables (ut, re, mi, fa, sol, la). The modern list of “solfeggio frequencies” is much newer: it was first promoted in the 1970s, popularized by books in the late 1990s, and spread through relaxation and meditation music online, where each tone was paired with a meaning.

There is no historical record of these exact frequencies in early music, and no reliable research showing they have specific effects on the body. People still enjoy them, the same way they enjoy a singing bowl or a particular chord.

What does each tone sound like?

All seven are pure sine tones, the simplest possible sound. Lower tones like 396 and 417 Hz feel round and soft; 741 and 852 Hz are brighter and more noticeable. In Solbox each tone plays quietly over its own soundscape, so it blends into the background instead of ringing in your ears.

How people use solfeggio tones

• As a calm background for meditation or breathing exercises.
• Under a soundscape for slow evenings and winding down.
• Layered with a noise color during light focus work.

Solbox labels each tone with the Hz number and a mood word, like 528 Hz — Renewal, so you can pick by feel rather than by claim.

How to play solfeggio frequencies in Solbox

Open the pull-up panel and swipe the frequency carousel. Tap a tone to play it with its soundscape, then adjust the tone and soundscape volumes separately. With haptic sync on, each tone also has its own gentle vibration pattern. 396 and 417 Hz are free; the other five come with Solbox Pro.