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.

Or the other process that is important is that I compress longer sections of composed music, either found or made by myself, to such an extent that the rhythm becomes a timbre, and formal subdivisions become rhythm.

In particular what is most important to me is the transformation of a sound by slowing it down, sometimes extremely, so that the inner of sound becomes a conceivable rhythm.

Karlheinz Stockhausen Quotes