Not only composer Giovanni Battista Pergolesi but also Gaspare Spontini was born nearby Jesi. The town is however mainly important for being the birthplace of one of the most important and fascinating figure in medieval history, the second emperor of the Hohenstaufen dynasty Frederick II of Swabia (1194-1250) also referred to as the Stupor Mundi “Wonder of the world”.
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.
Frederick II was one of the most fascinating figure in medieval history. His power was immense: King of Sicily and Jerusalem, Emperor of the Romans, King of Italy and Germany. His kingdom extended from the northern sea to Sicily and, on the east, to Israel and Lebanon.
The main difference between Opera and the previous polyphonic vocal music is the unique melodic line, resulting from the merging of bass and singing. In polyphonic music different vocal lines work independently, overlapping one another and making a text often incomprehensible. Opera instead offered a new way for making words expressive and intelligible, by creating a single melodic line, supported by an accompaniment.