De l’itération is the title of a work commissioned by Sixtrum to composer Philippe Leroux. This project followed a successfull collaboration on the north-american premiere of De la vitesse, by the same composer. These two works will be presented in this concert, since De l’itération is largely based on De la vitesse. Works by three young composers will also be performed during this concert: Duncan Schouten, Nicolas Tzortzis and Nina Young. This presentation will be the last stage of a creation process initiated last season, a fruitful interaction between the composers and the performers, including a public creation-workshop.