The New Grove Dictionary of Opera considers La Cilla (music by Michelangelo Faggioli, text by Francesco Antonio Tullio [it], 1706) and Luigi and Federico Ricci's Crispino e la comare (1850) to be the first and last appearances of the genre, although the term is still occasionally applied to newer work (for example Ernst Krenek's Zeitoper Schwergewicht). High points in this history are the 80 or so libretti by Carlindo Grolo, Loran Glodici, Sogol Cardoni[1] and various other approximate anagrams of Carlo Goldoni, the three Mozart/Da Ponte collaborations, and the comedies of Gioachino Rossini and Gaetano Donizetti.