The boundary between what the machine does and what stays human.

I come from a small village in Alsace. What I know how to do, I mostly taught myself, instrument after instrument, machine after machine. That is where I start, before the organ, before everything else.

The organ came around the age of eight. What gripped me went beyond music. It was the instrument itself: two hands, two feet, bellows, pipes, a whole mechanism to hold together for a sound to arise. I played it for about ten years. Without knowing it, I was already in the place that has never left me, where a machine, under the fingers, begins to say something.

From the organ came synthesizers, circuits, analog, digital, that binary language that spoke to me at once. At the same time the first computers appeared. I would open them completely and close them again, failures included, for the sole pleasure of understanding what was inside. I saved for months to afford the smallest device. The machine drew me for itself, as much as for what it made possible.

I learned the trade from the age of seventeen, in work-study, in the company more than in the classroom. My first compositions were born of that mixture, what I knew of computing tied to what I knew of the organ. No one had told me these two worlds were meant to be separate. They never have been.

Holding the machine for the human, on one side. And on the other, making it yield something that belongs to humans alone: an emotion, a tension, a memory.

This is what I have pursued for twenty years under the name Christopher Kah. Six albums, dozens of tracks, an approach held to the end. Starting from the darkest techno, it brought me back, recently, to where it all began: the organ. My latest album, "ORGANIC", sets the timbres of the church organ in dialogue with the sounds of the machine, at the exact point where the sacred and the synthetic meet.

One approach carried all of it. To begin not with the idea of a track, but with the limit: to fix in advance the few machines I would hold to, and to make that constraint the very material of the sound. The most with the least. Reducing the means so the gesture stays whole. That is probably where, for the first time, I chose what had to remain before letting the machine do the rest.

From the same conviction came a concept I shared widely: take a machine, close the manual, let instinct compose. Filmed and shared, it reached more than a million and a half people, and led me to masterclasses and to work with major brands. The method, and the sessions that made it known, are here.

That is probably where the boundary can best be heard. A man, machines, and the question, with each track, of what must remain of him in what they produce. The engineer and the artist were never two people.