Composer Giacomo Puccini Librettists Luigi Illica and Giuseppe Giacosa Based On the drama La Tosca by Victorien Sardou Company San Francisco Opera Association Touring Location Los Angeles, CA Venue Shrine Auditorium Season 1937 Language Italian Creative/Crew Conductor Gaetano Merola Stage Director(s) Armando Agnini Chorus Master William Tyroler Cast Floria Tosca, a celebrated singer Maria Jeritza Mario Cavaradossi, a painter Frank Forest Baron Scarpia, Chief of Police Richard Bonelli Cesare Angelotti, a political prisoner Norman Cordon Sacristan Oliver Jones Spoletta, a Police Agent Ludovico Oliviero Sciarrone, a gendarme Lawrence Sherrill Jailer Evaristo Alibertini Shepherd Catherine Allison Show Dates Sat, Nov 20 1937, 8:15pm Time and Place Rome, 1800 Scenes Act I -- Interior of the Church of St. Andrea Act II -- A Room in Scarpia's Apartments in the Farnese Palace Act III -- A Terrace of San Angelo Castle, Outside the Prison