"April 2000,
I discovered the recording of Helikopter-Quartett by Karlheinz Stockhausen.
Stunned by the work’s harsh and radical nature, I wrote to the composer requesting his permission to use this music, which is laden with techno-organic turbulence, for choreographic purposes. Helikopter was created in Créteil on 7 March 2001 for the Exit festival and has since been danced in many other festivals.

September 2005,
Stockhausen sent me an email suggesting we meet at his home near Cologne.
There, in his studio, he had me listen to a new opus entitled Sonntags-Abschied, a transposition for computer of a previous work for 5 separate choirs. He said the work would be perfect for dance and that is why he thought of me. "