Traditional / experimental practice
Solfeggio · Short Tour
The nine pure tones of the Solfeggio list, from 174 Hz to 963 Hz, 45 seconds each: a short opening, a few seconds of room air in between, a short room reverb on the tones, and a close as the last tone fades. To hear the whole list in nine minutes. The Solfeggio list is a modern spiritual interpretation; no scientific effect is claimed.
A traditional or spiritual practice, not a scientific claim.
Liner notes
- Bed
- Brown noise, Pink noise
- Body
- Pure tone · 174 Hz
- What do you hear?
- swelling
How is this sound made?
- Pure tone−29 dB
Pure tone · 174 Hz
- Brown noise−50 dB
- Pink noise−60 dB
- Reverb: convolution, 15% mix
In the room you can listen to each layer on its own, change its settings and save it as your own recipe.
Sound is generated on this device in real time; no files are downloaded from a server. There is a 3 s fade-in at the start and a 1 min fade-out at the end.
Compare with another sound
Hear both at the same loudness; drag the slider to the middle and they blend.
These two sounds can't share one recipe (different tuning or effects): listen to the samples one after the other.
What do we know, what don't we know?
T · Traditional/spiritual practiceLast reviewed 7 October 2026
No scientific claim is made; it is offered as a cultural or personal practice.
A traditional or spiritual practice, not a scientific claim.
The meanings of the Solfeggio frequencies
A modern spiritual interpretation; not a scientific claim.
Evidence level T: Traditional/spiritual practiceWhat do we know?
- Medieval solfège syllables (ut, re, mi…) are real music history.
- Today's list assigning Hz values to them is a modern spiritual interpretation, popularized by a non-peer-reviewed book published in 1999.Horowitz & Puleo 1999
- Lists vary between sources: some count six tones, others nine.
What don't we know?
- Evidence gapThe meanings given to the tones have not been scientifically tested, and different sources assign different meanings.
Studies
- Horowitz & Puleo 1999 · Book (not peer-reviewed)
A session's level is the weakest of its linked claims; it is never raised by a strong but unrelated claim.
Its neighbours on the map
The five sounds closest to this one by measured sound features.
- 1Solfeggio Path · Two ShoresWarm · steady · closeBoth tone and drone · both steady · same goal: explore
- 2Solfeggio Path · ReturnBright · steady · no melodyBoth tone and drone · both steady · same goal: explore
- 3Solfeggio Path · Close PitchesBright · steady · closeBoth tone and drone · both steady · same goal: explore
- 4Zen PatternDark · steady · wideBoth steady
- 5Drone Bed · A (432 tuning)Dark · steady · no melodyBoth tone and drone · both steady
Keep your device volume comfortable, preferably below 60%. You can also use your device's headphone-safety settings.