 The annual concert series - four concerts in 1991 - was at first performed in Ottawa high schools.In the early 1970s, the OSO began performing in the large concert hall of the National Arts Centre.Previous conductors have included Thomas Mayer (late 1950s), Clifford Hunt (1965-6), Nicholas Goldschmidt (1966-7), James Coles (1969–75), Brian Law (1975–91), and David Currie (1992-2016).