Since I started composing I have always worked with series of tempos, even superimposed the music of different groups of musicians, of singers, instrumentalists who play and sing in different tempos simultaneously and then meet every now and then in the same tempo.

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

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.

One experiments and has to choose always the best results.

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.

We are no longer the same after hearing certain sounds, and this is more the case when we hear organized sounds, sounds organized by another human being: music.

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