Performed by Slim Dusty.
Perfomred by Liam Clancy.
"The national anthem was changed from God Save the Queen/King in 1974 after a public opinion poll picked Advance Australia Fair as a more popular choice. In 1977 the National Song Poll was held and again Advance Australia Fair was the clear choice.
Advance Australia Fair was proclaimed as the national anthem on 19 April 1984 by the Governor-General." (from the web site AllDownUnder.com)