After studying composition, musicology and Baroque singing (countertenor) in Warsaw, Kwieciński moved in 2005 to The Hague, where among his compositional mentors were Louis Andriessen, Martijn Padding and Yannis Kyriakides. Subsequent contacts have included Luca Francesconi and Hanna Kulenty (the only Pole among these names, also based in Holland) and he has also cited Gérard Grisey, Helmut Lachenmann and Salvatore Sciarrino as influences. But Kwieciński, despite being only in his early thirties, is distinctively his own man, occupying his own technical and expressive world.