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This is 99% Invisible. I'm Roman Mars.

Our modern world is determined by them, the architects, the designers.

They decide how you experience the physical world.

But the ubiquity of smartphones with GPS, a compass, a network, and more computing power than we know what to do with, has created this new space where a new reality can lie on top of the physical, real world.

It's an augmented reality and it adds a whole new level of creativity and design to the everyday world.

Most augmented reality uses the smartphone's camera.

You turn on the application, you hit the augmented reality button, and then you look through your phone's camera at the now labeled and visible, stars and planets in the daytime sky, or another app could pop up cool info graphics with details about a bridge or a building.

It's still in its infancy, but the possibility of experiencing a hidden world on top of the world in front of you is tantalizing and so full of potential.

But I personally like to augment my reality with sound.

And that brings us to the musical smartphone app called RJDJ.

We are combining the world around you with your listening experience.

That's the founder of RJDJ, Michael Bridenbroker.

So, you know, the door closes and something really amazing acoustically could happen.

Robert Thomas is one of RJDJ's composers.

RJDJ creates what we call reactive music, which is the new format of music, which changes in relation to what you're doing.

RJDJ is comprised of scenes, which are analogous to songs, but they're more like instructions for songs.

There are bits of music, code for the phone's own built-in synthesizer, audio filters, and these are triggered by the user according to the composer's plan for the scene.

I call this quantum composing.

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