Orlando furioso (Vivaldi, 1714)

Orlando furioso RV 819 (Italian pronunciation: [orˈlando fuˈrjoːzo, -so], Teatro San Angelo, Venice 1714) is a three-act opera surviving in manuscript in Antonio Vivaldi's personal library, only partly related to his better known Orlando furioso (RV 728) of 1727. It is a recomposition of an Orlando furioso written by Giovanni Alberto Ristori which had been very successfully staged by Vivaldi and his father's impresa in 1713, and whose music survives in a few fragments retained in the score of RV 819. Therefore, Vivaldi's first cataloguer Peter Ryom did not assign the opera a RV number, but catalogued it as RV Anh. 84. The libretto was by Grazio Braccioli.