The title of this piece by Balázs Horváth refers to the interdependence of the musical materials. The first movement explores a complex system of rhythms with different symmetrical and asymmetrical metres. The second movement as specified by Péter Bársony, who commissioned the work, develops a special relationship with Debussy?s Sonata: it traces the symmetrical and asymmetrical temporal occurrence of the motifs of the Debussy work, as a sort of concrete formal analysis.