Un ballo in maschera by Giuseppe Verdi Riccardo - Jussi Björling Renato - Marko Rothmüller Amelia - Suzy Morris Ulrica - Martha Larrimore Oscar - Audrey Schuh Silvano - Henri Feux Samuele - Norman Treigle Tom - Jack Dabdoub Un Giudice - George Berger Walter Herbert, conductor New Orleans Opera Orchestra and Chorus Live performance April 1950