Nabucco (Italian pronunciation: [naˈbukko]; short for Nabucodonosor [naˌbukoˈdɔːnozor, -donoˈzɔr], i.e. "Nebuchadnezzar") is an Italian-language opera in four acts composed in 1841 by Giuseppe Verdi to an Italian libretto by Temistocle Solera. The libretto is based on the biblical books of 2 Kings, Jeremiah, Lamentations, and Daniel, and on the 1836 play by Auguste Anicet-Bourgeois and Francis Cornu. However, Antonio Cortese's ballet adaptation of the play (with its necessary simplifications), given at La Scala in 1836, was a more important source for Solera than the play itself. Under its original name of Nabucodonosor, the opera was first performed at La Scala in Milan on 9 March 1842.
Nabucco is the opera that is considered to have permanently established Verdi's reputation as a composer. He commented that "this is the opera with which my artistic career really begins. And though I had many difficulties to fight against, it is certain that Nabucco was born under a lucky star."