Composer Philippe Boesmans was best known for his six operas, several of them based on famous plays. He was a longtime composer-in-residence at the La Monnaie opera house in Brussels. Boesmans was heavily influenced by the so-called Liège Group of composers, which included Henri Pousseur and Célestin Deliège. As his style developed, he turned from serialism to more accessible idioms that included consonances, although he insisted that he had not turned his back on serialist composition. Boesmans won the Italia Prize for his 1969 work Upon La Mi. His 2009 opera Yvonne, princesse de Bourgogne took the Polish play Iwona, księżniczka Burgunda as its source. In 2015, he composed an opera based on the Pinocchio story. Boesmans died in Brussels on April 10, 2022. As of the mid-2020s, some 20 of his works had been recorded, including most of the operas.