Act I
Arturo Toscanini, Jan Peerce, Francesco Valentino, NBC Chorus, Salvatore Baccaloni, Anne McKnight, George Cehanovsky, Nicola Moscona, NBC Symphony Orchestra, Licia Albanese
Act II
George Cehanovsky, Francesco Valentino, Arturo Toscanini, NBC Chorus, Salvatore Baccaloni, Licia Albanese, NBC Symphony Orchestra, Anne McKnight, Nicola Moscona, Jan Peerce
Act III
NBC Symphony Orchestra, NBC Chorus, Jan Peerce, Licia Albanese, Anne McKnight, Arturo Toscanini, George Cehanovsky, Nicola Moscona, Salvatore Baccaloni, Francesco Valentino
Act IV
Licia Albanese, Anne McKnight, Francesco Valentino, Salvatore Baccaloni, Jan Peerce, George Cehanovsky, NBC Symphony Orchestra, Nicola Moscona, NBC Chorus, Arturo Toscanini