Orch. based in Sydney, NSW. Began in 1932 as broadcasting orch. (ABC) also giving public and schools concerts. Title of Sydney SO adopted permanently in 1945. First cond. Joseph Post. Prin. conds. since have incl. Joseph Post; Sir Eugene Goossens (1947–56); Nikolay Malko (1957–61); Dean Dixon (1963–7); Moshe Atzmon (1969–71); Willem van Otterloo (1973–8); Louis Frémaux (1979–81); Sir Charles Mackerras (1982–5); Zdeněk Mácal (1986); Stuart Challender (1987–91); Edo de Waart 1993–2003; Gianluigi Gelmetti from 2004. Gives over 160 concerts a year, mainly in Sydney Opera House Concert Hall.