Royal Swedish Opera Daniel Auber and "Un ballo in maschera" by Verdi.) Following the assassination, the opera house was closed until 1 November 1792, when it was opened again, which by some was considered shocking. The son of Gustav III, King Gustav IV Adolf of Sweden, did not like the Opera, possibly because of the murder of his father, and disliked the fact that the scene of his father's murder was used as a place of amusement and leisure, and when a frivolous play was performed for his queen Frederica of Baden in 1806, he decided to close it down. It remained closed
Royal Swedish Opera which was open for everyone wearing a mask at a cheap cost and somewhat ill-reputed. The building was very imposing with its centre Corinthian tetrastyle portico supporting four statues and topped by the royal crown. The four-tiered auditorium was oval in shape, had excellent acoustics and sight lines. The sumptuous foyer contained neoclassic medallions and pilasters. It was in the foyer of the opera house where the king met his fate: during a masquerade on March 16, 1792, he was shot by Jacob Johan Anckarström, and died 7 days later. (In turn, this event inspired the operas "Gustave III" by