Royal Swedish Opera architect Carl Fredrik Adelcrantz was commissioned by King Gustav III, a strong adherent of the ideal of an enlightened absolutism and as such was a great patron of the arts. The Swedish Opera company had first been located in Bollhuset, but there was a need to separate the Opera from the theatre and give them separate buildings. Construction began in 1775 and the theatre was inaugurated on 30 September 1782 with a performance of the German composer Johann Gottlieb Naumann's "Cora och Alonzo". It was also the place for public masquerade balls, events inspired from the famous opera-balls in Paris,
Giuseppe Verdi performance. Following its failure, it is claimed Verdi vowed never to compose again, but in his "Sketch" he recounts how Merelli persuaded him to write a new opera. Verdi was to claim that he gradually began to work on the music for "Nabucco", the libretto of which had originally been rejected by the composer Otto Nicolai: "This verse today, tomorrow that, here a note, there a whole phrase, and little by little the opera was written", he later recalled. By the autumn of 1841 it was complete, originally under the title "Nabucodonosor". Well received at its first performance on 9