The first public concert in the Concert Hall took place on 5 September 1973. It was an all-Wagner orchestral concert performed by the Sydney Symphony Orchestra, conducted by Charles Mackerras and with Birgit Nilsson as the soprano soloist. The first music played was the Prelude to Die Meistersinger von Nürnberg. The concert closed with the Immolation Scene from Götterdämmerung. Wiki link