A commission, and the wrong church
Lucerne has the Hofkirche, which holds one of the most interesting pipe organs in Switzerland. That is not where I played. I had been asked to write a piece for Lucerne and perform it there — organ and electronics, as usual, but this time with strings as well — and the concert was in St. Johannes: a church from 1970, built entirely out of raw concrete.
A building designed to confuse you
Brutalism is architecture built on being honest about material. A concrete wall looks like a concrete wall, not like something else. A steel beam looks like a plain industrial steel beam. I adore it. And this building is designed to be confusing, with full intent — the architect wanted it to feel like a cave, a place to take cover in. You notice the second you try to leave again: the door you came in through looks exactly like every other door, so you turn around once and it is gone. There are about five doors in that room and none of them looks like a main entrance. I picked the wrong one on camera. Works as intended, I guess.
Gaudí, who did the exact opposite
The piece was supposed to be about the Sagrada Família in Barcelona — Gaudí, and more or less the opposite of everything around me. He used materials so that they look like something else. A forest made of stone pillars. Arches found by hanging weighted strings upside down and copying the shape they fell into. Everything is taken from nature and then built from a material you would never expect. That transformation is the part that stayed with me.
An organ you have to pull by hand
The organ in St. Johannes is completely mechanical. Nothing can be saved, nothing is preset. Every stop has to be pushed or pulled by hand while the piece is running.
How do you turn that logic into music?
While writing I kept asking myself how to transfer Gaudí's method into sound. I ended up with aleatoric writing — chance. Like the weighted strings: you set it up, and you do not know what shape it will take. The trick is the boundaries. You do not tell players to do whatever they want, you give them a direction. That is also how improvisation works for me: I limit myself, and what comes out is better than if I were completely free.
Two strangers and one iPad
Writing like that works best when you know the musicians well. I did not — I had never met them. And I have noticed over the last years that people tend to have strong opinions about my music: some really hate it, some love it. I was hoping for the second kind. In an orchestra you can dislike a piece and still play what is on the page. If you have to improvise inside something you do not like, it will probably not end well.
They turned out to be a married couple, playing from a single iPad — partly because the score is a bit complicated, and with only your own part it gets harder to find your way through it. I liked them immediately. We had a few things to clarify at the start, and then it went much faster than I had expected.
"Mathias, the organ is simply too loud"
The pastor said it during the rehearsal. I had not heard it, because from the organ bench you sit in a completely different sound — it blows into both ears from the sides, so up there it is always too loud. The problem was the balance: the organ simply rolled over the strings. I took stops out and closed the swell shutters a little, but that only affects part of the instrument. Better. Still not good.
The night before
I went back to the hotel with that thought stuck in my head: still too loud, and people would dislike the whole piece because they would never hear what it was trying to do. It would simply sound wrong. I woke up about five times that night.
Half an organ, fifteen minutes before
The next morning I got to the church early with one idea: use half the organ, keep the shutters closed, and leave the main division out entirely. It is not a big instrument, so carrying a full sound on half of it should not work. When the strings arrived I told them we had to test it quickly, because the concert started in about fifteen minutes. We tested it. I had expected a painful compromise, and I did not miss a single thing. It simply worked, and it sounded great.
The concert
The programme alternated readings about the Sagrada Família with the music, which is also why the lighting looked so much like the photographs everyone knows of Gaudí's interior — they did that really well. My movements sat between the reading sections, each one built on a part of the text. So next to the chance-based material taken from nature, I kept everything else strict and precise.
The church was packed, which I had not expected on a Sunday morning.
A cave and a stone forest
Halfway through I was still wondering why we were presenting a piece about the Sagrada Família in a building that has nothing to do with it. The longer I sat with it, the less sure I got. Both imitate nature, each in its own way: here a cave, a grotto, in completely honest material; there a dense, light-filled wood made of stone. Maybe they have more in common than I first thought. I would like to hear what you think about that.
Either way, it was a beautiful experience again — it always is when you get out of the studio and perform somewhere live.
The piece is called Sagrada, for organ, electronics, violin and cello. It was written for this matinée and premiered there on 10 May 2026, with Lisa Schatzman (violin) and Beni Santora (cello), readings by Walter Sigi Arnold and words by Herbert Gut.