PURE SOUL ATLAS
A map of sound, colour and soul.
The stories behind the frequencies.
Tones, colours, the sky, ancient places and the inner journey: in the Atlas we explore where sound comes from and what people have connected with it for thousands of years. Every article says clearly whether it is measured, handed down or a thought experiment.
NEW IN THE ATLAS
Latest articles
Don’t Trust the Title: How We Read a Spectrum
Many videos promise a frequency in their title. A spectrum shows whether it is really there. How we measure every Pure Soul track before release – and how you can look for yourself.
The Cosmic Octave: How the Planets Sound
In 1978 Hans Cousto turned the orbits of the planets into audible tones – with the same octave rule we use for our light colours. We recalculated his tones and gave each one its colour.
The 110 Hz Chambers: Newgrange, Malta and the Tone in the Stone
Acousticians measured ancient stone chambers in Britain, Ireland and Malta – and found that many of them answer most strongly between 95 and 120 Hz. What we know, and what remains a mystery.
The Light Octave: What Colour Is Your Tone?
Double a tone forty times and it becomes light. A gentle thought experiment that gives each of our ten frequencies a colour – and why 528 Hz turns green.
EXPLORE
Eight regions of the Atlas
Each region gathers the articles on one theme. Choose where you would like to wander.
Every tone carries a light within.
Hear the colour of your frequency on the sound wheel – or listen to the full sessions on our music page.