Built in two parts, Labyrinthes for Clarinet (1997) begins with a very free movement that states one of the main motifs. Then comes a theme in rapid repeated notes. This section concludes with an interpenetration of fragments of both motifs. The second part, very virtuosic and rhythmic, evokes a two-part dialogue between the clarinet and an imaginary instrument through the numerous and rapid changes of register and especially through a particular effect of percussive attack mode (slap tongue). This version for clarinet – there are versions for flute or saxophone – is dedicated to Ronald Van Spaendonck, who recorded it on the CD Enigma (Dux label 0531).