As always in a musical collaboration: One has to like each other. As simple as that.

How did this or that change my music? The only time I have to think about it is when an interviewer asks me that.

Every music - except dance music, which is for dancing, I suppose - is for the spirit of the human being, and not for the body.

The human voice is the first and most natural musical instrument, also the most emotional.

Psy Free was a trio consisting of guitar, organ and drums. I was the drummer. We did what the name suggests: psychedelic, free music.

Yes, I was invited to make the sound environment at a booth of a huge electronic company, during the Hanover Industrial Fair in 1973. It was a job. Slightly good paid. But not as much as my producer then told the press.

I listened to the rock music of that time, but as you know and can easily hear: my music of that era had nothing to do with the common music of this era. I was experimenting, I was searching for something new.