. . . . . "The choir has worked with conductors including Antoni Wit, Kazimierz Kord, Grzegorz Nowak, Jacek Kaspszyk, Yoav Talmi, Jerzy Semkow and Philippe Herreweghe, and with Krzysztof Penderecki, whose Passion, Matins and Credo remain a part of the choir???s repertoire." . . . . .