A Masked Ball Composer Giuseppe Verdi Librettist Antonio Somma Based On a libretto by Eugene Scribe for Daniel Auber's opera Gustave III, ou Le Bal masque Company San Francisco Opera Association Touring Location Los Angeles, CA Venue Shrine Auditorium Season 1961 Language Italian Creative/Crew Conductor Francesco Molinari-Pradelli Stage Director(s) Dino Yannopoulos Scenic revision Ming Cho Lee Chorus Director Vincenzo Giannini Choreographer Lew Christensen Costumers Goldstein & Co. Cast Count Horn (Samuele) Plinio Clabassi Count Warting (Tommaso) Andrew Foldi Oscar (Edgar), a page Graziella Sciutti Gustavus III, King of Sweden (Riccardo) Giuseppe Zampieri Count Anckarstroem (Renato), the king's secretary Ettore Bastianini Cornell MacNeil(11/11) Judge Raymond Nilsson Ulrica, a sorceress Margarethe Bence Katherine Hilgenberg(11/11) Silvano, a Sailor Donald Drain The Countess's servant Winther Andersen Countess Anckarstroem (Amelia) Gré Brouwenstijn Show Dates Fri, Oct 27 1961, 8pm Sat, Nov 11 1961, 8pm Time and Place 1792, Sweden Scenes Act I, Scene 1 -- The king's audience chamber Scene 2 -- Ulrica's cave Act II -- A deserted gallows-field near Stockholm Act III, Scene 1 -- A room in Renato's mansion Scene 2 -- A room in the royal palace Scene 3 -- The royal ballroom Notes Corps de Ballet