solu

Welcome to something NEW.

ToneStream is a meticulously designed, live-streaming, harmonically coherent sound field that cultivates clarity, emotional regulation and inner noticing.

ToneStream is beautiful, tonal and often poignant. Yet it's not music, entertainment or escapism — it's a way to play with life more deeply, and with greater ease and grace.

ToneStream's design is minimalist: it gives the listener space to grow and integrate without the use of words or narrative.

Consider ToneStream as an integrative bridge that helps people carry the benefits of inner work into everyday life.

Listen to ToneStream

Check back regularly for new demos!

Listen to ToneStream Samples

Tap an image to play. For best results listen on earbuds, headphones or good speakers.

Sample 1

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ToneStream is Different!

Live, Deeply Healing Sounds in Constant Evolution

Join thousands around the world as all listen to the same new sound arrangements, sharing in a global peace.

Meditate. Exercise. Sleep. Wake. Work or Relax.

The Evolution of Peace is here to be shared in ToneStream. Listen to understand how it supports you and the world in which you live.

ToneStream Helps!

Your Custom ToneStream Timers

We make it easy and pressure‑free—listen as long or as short as you like.

Create your own timed sessions for classes, sleep, meditations, work breaks, baby naptimes, study sessions and more.

ToneStream Cares!

Your Custom ToneStream Reminders

If you’d like a gentle nudge to pause and take a break with ToneStream, set reminders and text to help you step away and listen.

These reminders can be scheduled for specific times, or set to appear randomly throughout your day.

ToneStream and YOU!

The Daily ToneStream Connection Cards

A fresh daily card for contemplation, thoughts of ToneStream in connection with you and Peace, and a reminder of why you’re here and where your listening can take you.

The Benefits

ToneStream is Made for Life

Peace

Peace is the goal. ToneStream is built on live-recorded pure tones from the natural harmonic series—known since Pythagoras for their harmonizing effect. Ever-changing soundscapes unfold around them, forming a continuously new experience.

Sleep

You need and deserve good sleep. ToneStream doesn't use voice, words, or music. Instead, it generates real-time neuromodulation sequences designed to quiet the mind and ease away stress and anxiety—helping you drift naturally into restful sleep.

Slow Tech

You really can feel safe, and you can feel good. ToneStream offers a new kind of relief—no fixing, no targeting. As its gentle sound sequences restore your natural wholeness, stress begins to loosen and fade.

Latest from Solu

Sound thinking from Michael and Alene

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Cat Solu History-Michael 30 Jun 2026

Act 3 of 3 -The Day the Fog Spoke and How the Fog Lives in ToneStream

The Day the Fog Spoke: A Childhood Moment, Part 3 A Foundation for ToneStream -Michael Joly When I listen to ToneStream...

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Solu History-Michael 30 Jun 2026

Act 2 of 3 – The Day the Fog Spoke

The Day the Fog Spoke: A Childhood Moment, Part 2 -Michael Joly When I look back now, I think of that...

Read article

Solu History-Michael 18 Jun 2026

Act I of 3 – The Day the Fog Spoke

The Day the Fog Spoke: A Childhood Moment, Part 1 -Michael Joly My earliest memories are sound memories. One of them...

Read article

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Our Reviews

ToneStream Feedback!

★★★★★

Last night, the new Solu (ToneStream) app put me to sleep. My mind thought it could sense a subtle difference like an echo effect (?). I am looking forward to using it, again, tonight. In recent years, I have been struggling with anxiety (and other health issues). Being able to use Solu to help manage that has been a blessing. You... Show more

Daniel

★★★★★

I just wanted to say I really love this app. I use it all the time—flights, going to sleep. I work as a FOH audio engineer and I love it to settle after a long show day.

Sophia

★★★★★

I've been using the Solu App as a complement to my mindfulness practice and have found it extremely helpful in staying present. It has become part of my daily routine. I'm also a certified Reiki practitioner, and I've incorporated the app into my healing sessions, where it helps create a smooth and focused flow of energy.

Rebecca

Join in the Stream

Start Listening to ToneStream

Try with no risk at all — your first 7 days of ToneStream are free!

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Choose your plan

Choose How You Want To Listen

7-day free trial. Cancel anytime.

Monthly

$9.99 / month

Unlimited access to all ToneStream features.

Start 7-day free trial

Yearly

$69.99 / year

Unlimited access to all ToneStream features.

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Included with every plan

Unlimited access to ToneStream
Legacy Solu tones offline
Set play times
Set reminders

Give the Gift of ToneStream

Share The Evolution of Peace, connection, and a new way forward with someone special.

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