Last year Opera Rara, in co-production with the Royal Opera House, presented the world premiere of Donizetti’s “L’Ange de Nisida,” a work that was written in 1839 for the Théâtre de la Renaissance in Paris. However, when the theatre went bankrupt, the opera was left unperformed and Donizetti used the music that was written for “La Favorite,” one of his {…}