And I'll never forget the first time I took the possibility to project sound every day for six or seven hours with special devices which were built for me.

I was horrible at everything I ever tried to do and people respect me. The American Dream has come true!!

One experiments and has to choose always the best results.

And the invention of transformations of certain figures has become the most important in musical composition.

I spent most of the year in the studio for electronic music at a radio station in Cologne or in other studios where I produced new works with all kinds of electronic apparatus.

Whenever I felt happy about having discovered something, the first encounter, not only with the public, with other musicians, with specialists, etc, was that they rejected it.

Music is mathematics, the mathematics of listening, mathematics for the ears.