This year, the Huygens-Fokker Foundation commemorates the 25th anniversary of the death of Henk Badings (Bandung, Dutch East Indies, 17 January 1907 – Hugten near Maarheeze, 26 June 1987). His significant contribution to the 31-tone repertoire will be highlighted during this concert. Badings composed four works for the Fokker organ. In 1954, he wrote his Reeks van kleine klankstukken in selectieve toonsystemen for 31-tone organ. In this series, he makes use of several twelve-tone rows (selected from the 31 tones) that are pre-programmed and played by means of a traditional twelve-tone keyboard on the organ. In this work, Badings does not directly distance himself from classical tonality; rather, microtonality functions as a kind of ornamentation, a colouring of this classical tonality. In addition to his works for the Fokker organ, Badings also composed 31-tone music for, among others, string quartet (no. 4, 1966) and for the violin duo Bouw Lemkes and Jeanne Vos, who remained an active and well-known duo into the 1980s, devotedly promoting 31-tone music. A cross-section of the finest microtonal works by Henk Badings will be performed in this concert, featuring Ere Lievonen (Fokker organ), Judith van Driel (violin) and Marleen Wester (violin).