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 dress" (the words in which Hans von Bülow condemned it before even hearing it). Although in the Requiem Verdi puts to use many of the techniques he learned in opera, its musical forms and emotions are not those of the stage. Verdi's tone painting at the opening of the Requiem is vividly described by the Italian composer Ildebrando Pizzetti, writing in 1941: "in [the words] murmured by an invisible crowd over the slow swaying of a few simple chords, you straightaway sense the fear and sadness of a vast multitude before the mystery of death. In the [following] "Et lux