Guide / 02

The iso principle: start where you are

When you’re wound up, very slow music can feel like being told to calm down. The iso principle is a gentler idea.

The idea

In music therapy, the iso principle means meeting someone’s current mood with music that matches it, then changing the music gradually toward the mood you’re aiming for. “Iso” is from the Greek for “equal”: you start equal to where the listener is.

So instead of going straight from a stressful hour to the stillest track there is, you start with something that still has some movement in it, and step down from there.

How this site uses it

When you set how tight things feel on the Untangle page, that number sets where the session starts. At 9 or 10, the first tracks are the busiest of the calm ones. At 1 or 2, it starts nearly still. Either way, every track after that is a little softer, slower or warmer than the one before, and the last one is among the stillest on the shelf.

The knots do the same thing in miniature: each set is ordered from its busiest track to its calmest.

Try it yourself

1. Notice where you are: wired, tired, tense, low.
2. Pick something that fits that, not where you want to be.
3. Every track or two, pick something a step calmer.
4. End on the calmest thing you have, and sit with the quiet for a moment after.

It’s a simple idea and it’s easy to do at home. It isn’t therapy, but it borrows a good trick from it.

Questions

Where does the iso principle come from?

It’s a long-standing idea in music therapy: match the listener’s current state with music, then shift the music step by step toward the state you want.

Why not just play the calmest music right away?

When you’re very tense, very slow music can feel out of reach or even irritating. Starting closer to your mood and easing down tends to feel more natural.