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 But in fact the piece encored was not "Va, pensiero" but the hymn "Immenso Jehova". The growth of the "identification of Verdi's music with Italian nationalist politics" perhaps began in the 1840s. In 1848, the nationalist leader Giuseppe Mazzini (whom Verdi had met in London the previous year) requested Verdi (who complied) to write a patriotic hymn. The opera historian Charles Osborne describes the 1849 La battaglia di Legnano as "an opera with a purpose" and maintains that "while parts of Verdi's earlier operas had frequently been taken up by the fighters of the Risorgimento...this time the composer had given