The final phase was to build the 1967-1973interior design in between 1967-1973. Its shell-like architecture is one of the first things that come to most people’s minds when they think of Sydney. The music played at the official opening ceremony on October 20, 1973, was Beethoven’s Ninth Symphony. Queen Elizabeth II of England (also the reigning monarch of Australia) was the most prominent of the large number of VIPs in attendance. However, a number of performances preceded these ceremonies, including the first opera performed here — War and Peace by Sergei Prokofiev — the previous September 28.