Una follia is a farsa in one act by composer Gaetano Donizetti. The work premiered on 15 December 1818 at the Teatro San Luca in Venice. The opera uses the same Italian-language libretto by Bartolomeo Merelli after August von Kotzebue's Der Graf von Burgund that Donizetti used for his Enrico di Borgogna a month earlier, but with different music. It was given one performance and "never performed again, and its score has never been found."[1]
Osborne, Charles, (1994), The Bel Canto Operas of Rossini, Donizetti, and Bellini, Portland, Oregon: Amadeus Press. ISBN0-931340-71-3
Other sources
Allitt, John Stewart (1991), Donizetti: in the light of Romanticism and the teaching of Johann Simon Mayr, Shaftesbury: Element Books, Ltd (UK); Rockport, MA: Element, Inc.(USA)
Ashbrook, William and Sarah Hibberd (2001), in Holden, Amanda (Ed.), The New Penguin Opera Guide, New York: Penguin Putnam. ISBN0-14-029312-4. pp. 224 – 247.
Loewenberg, Alfred (1970). Annals of Opera, 1597-1940, 2nd edition. Rowman and Littlefield
Weinstock, Herbert (1963), Donizetti and the World of Opera in Italy, Paris, and Vienna in the First Half of the Nineteenth Century, New York: Pantheon Books. LCCN63-13703