Jan Koecher

Stanisław Moniuszko

Jerzy Duszyński

Włodzimierz Wolski

Barbara Kostrzewska

Paulina Rivoli

Nina Andrycz

Maria Kalergis

Danuta Szaflarska

Countess Krystyna

Janusz Warnecki

Professor

Jan Kurnakowicz

Prof. Jan Quatrini

Stanisław Żeleński

Józef Sikorski, music critic

Gustaw Buszyński

Theater Director Ignacy Abramowicz

Zdzisław Mrożewski

Count Alfred (as Z. Morzewski)

Tadeusz Cygler

Julian Dobrski

Wacław Domieniecki

Italian Tenor

Józef Karbowski

Secretary

Jan Ciecierski

Bishop

Kazimierz Opaliński

Theater Records-keeper

Ludwik Sempoliński

Klimowicz

Krystyna Karkowska

Magdalenka

Halina Billing-Wohl

Moniuszka (wife)

Wacław Ścibor-Rylski

Sacchetti

Aleksander Gąssowski

Jefimow

Henryk Modrzewski

Sennewald

Zenon Burzyński

Tunio

Ludwik Benoit

Sculptor

Zdzisław Szymański

Reporter

Mieczysław Pawlikowski

Musician

Tadeusz Pluciński

Painter

Ryszard Barycz

Poet

Emil Karewicz

Georg

Jan Zielinski

stage manager

Bronisław Darski

Porter (uncredited)

Jerzy Kaczmarek

(uncredited)

Maria Kaniewska

Moniuszko's Co-Passenger (uncredited)

Krystyna Królikiewicz

(uncredited)

Wiesława Kwaśniewska

(uncredited)

Józef Nowak

Student with Flowers (uncredited)

Janina Ordężanka

(uncredited)

Lech Ordon

Publisher (uncredited)

Bronisław Pawlik

Shopkeeper (uncredited)

Czesław Piaskowski

(uncredited)

Jerzy Pietraszkiewicz

(uncredited)

Olga Sawicka

(uncredited)

Teresa Szmigielówna

(uncredited)

Kazimierz Szubert

(uncredited)

Janusz Ściwiarski

(uncredited)

Tadeusz Teodorczyk

Reporter (uncredited)