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,
Gustavo III (Verdi) opera had been butchered by the censors when it was presented in his absence a few years before. Rejecting any involvement with "Adelia", a lawsuit was then set in place by the theatre for breach of contract. In his counter suit, Verdi claimed damages and, in the document which he prepared called "Defense of Maestro Cavalier Giuseppe Verdi" and in which he gave instructions to his lawyer, he laid what he regarded as the absurdity of some of the requirements. These included the substitution of one word of the opening chorus' "Die!" for "He sleeps". In addition, it has been