Director Roman Polanski's film The Pianist is based on the memoirs of Polish classical pianist Wladyslaw Szpilman about his harrowing experiences under the Nazi occupation of Warsaw during World War II. The soundtrack album consists almost entirely of Chopin piano pieces, most of them played by Janusz Olejniczak. Most of those, in turn, are solo performances, although Olejniczak is joined by the Warsaw Philharmonic Orchestra, conducted by Tadeusz Strugala, for Grand Polonaise for Piano and Orchestra. The sole non-Chopin track is the excerpt from Wojciech Kilar's score, "Moving to the Ghetto October 31, 1940," a klezmer-like piece running only 1:45 in which Hanna Wolczedska plays clarinet, accompanied by the Warsaw Philharmonic. Appropriately, the album ends with an actual recording by Szpilman of the Mazurka in A Minor, Op. 17, No. 4.