 In 1923, Bertha Jorgensen became the first female leader of a professional orchestra in Australia, and she went on to play with the orchestra for 50 years and became the longest-serving female leader of an orchestra on an international scale.The MSO was the first Australian orchestra to perform overseas (New Zealand, 1965), and the first to play in Carnegie Hall, New York, in 1970.Its overseas tours – the US, Canada, Japan, Korea, Europe (2000, 2007, 2014), China (2002), St Petersburg, Russia (2003) and Japan (2005) – have gained it widespread international recognition.