The first concert of Studio CH&K took place at Warsaw's Dziekanka on 25 October 1989, followed by appearances in Ghent, Brussels, Munich, and Paris. In the following years, the Studio performed in renowned concert halls notably in Berne, Poznań, Innsbruck, Berlin, Cracow, Wrocław, New York, Boston, Philadelphia, Toronto, Amsterdam, Eindhoven, and many other cities. Marek Chołoniewski and Krzysztof Knittel played only their own works, composed in majority for the duo. In 1998, they were joined by Włodzimierz Kiniorski and for the following ten years, appeared in Poland and abroad as the CH&K&K group.