Venice was an important and rich commercial centre, welcoming foreign merchants, businessmen dignitaries and aristocrats on the Grand Tour. The demand for entertainment was therefore high, particularly during the Carnevale, Some enterprising impresarios came up with the idea of setting up a public opera house, charging the public for the hire of boxes on a subscription system. The business turned out to be profitable. In a few years 16 theatres were built requiring a big number of new operas. By the end of 1600 the repertoire counted about 300 operas.
Rossini wrote his first opera, Demetrio e Polibio in 1806 not even fifteen. His official debut was in Venice in 1810 with the opera La Cambiale di Matrimonio. In the following two decades Rossini composed 39 operas, 4 or 5 new ones per year, with some controversial premieres, such as the Barber of Seville legendary fiasco in Rome in 1816 and some extraordinary successes: La Gazza Ladra, Zelmira and Semiramide, the last opera premiered in Italy in 1823.
At the beginning of the eighteenth century starts to develop a type of opera uniquely based on comic characters. It was a consequence of Zeno’s reform which separated the comic scenes within an opera, from all the rest. Two types of performances started then to take shape, marking a turning point in the history of opera. They were the interludes or intermezzi and a music comedy in Neapolitan dialect, called Commedeja pee Mmuseca.