dr. jeremy leach
The Story of Muzoti

The Story of Muzoti

And how music exploits the inner workings of our brain

26 June, 2020

Muzoti was not always called Muzoti. It started life as an idea, many, many years ago.

Back when I was 17 years old, I would spend many hours programming my Acorn Archimedes computer at home. I often heard my mother playing classical music on the record player downstairs (remember those?) and I wondered to myself, why is it that instrumental music can create such beautiful emotions, and illicit so much pleasure. After all there were no vocals, no references to real world events or people. It's a purely abstract medium.

Well, I quickly realised that a melody is just a sequence of notes, pitches going up and down. So what is it in the melody that makes it sound good, whereas a sequence of random numbers sounds awful?

At first, I couldn't work it out. But then - it came to me.

Nearly all music, no matter what style or culture, have two things in common.

They all have a lot of repetiton and variation. Patterns of notes that repeat, and then vary. Why would this be, what is the meaning of this repetition and variation? Again I couldn't work it out.

Then one day, in the countryside, it hit me!

Life is self similar

I realised that nature itself is full of patterns that repeat and vary, both in time and space!

When we look at how things change in time we see:

  • That the seasons repeat every year, but each spring is not exactly like the previous one.
  • When an apple falls out of a tree it follows a predictable path until it hits the ground, and then its behaviour depends on how it landed and where.
  • When your ancestors saw a tiger and it killed one of them, they knew that next time they saw a tiger, it might do the same and they should probably hide.

When we look how things change in 3d space, we see for example:

  • One apple looks like another apple on the same tree, but each one varies a bit.
  • One tree looks like another tree of the same species, but might be slightly different shape.
  • All trees have certain things in common, e.g. branches and a fractal quality.
  • Even man made things are similar to each other but also different on a per instance basis - for example houses, cars, chairs.

Predict self-similarity, stay alive

Your life literally depends on being able to predict the patterns in nature. So much so that we have a system in our brain that rewards us when we observe a repeating pattern and we subconsciously predict how it will turn out.

It's called the dopamine reward system and it floods our body with feel-good chemicals when we observe a pattern and correctly predict how it plays out.

So at this point I wondered - given that this reward system already exists, does music have repetiton in order to artificially stimulate it?

Building the composing machine

When I got back home I switched on my computer and I started building a system that created the kind of repeating and varying sequences of notes that I believed would stimulate the reward centre of the brain. Lo and behold, as my system developed, the patterns that came out sounded more and more like music!

In the following years I continued refining my ideas, all through university and my subsequent PhD.

The result of all that work is a system that anyone can use to create their own music.

I've called it Muzoti. If you want to try it out, you can here.

Conclusion

So, what did I discover?

That music is almost certainly a by-product of the way our brain has evolved, which is to predict patterns in nature.

And that the patterns in music hijack the brain's reward system, in order to maximise the pleasure we experience when listening to them.

© Dr. Jeremy Leach 2020