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