The Australian Festival of Progressive Music was held at a Myponga dairy farm from 30 January to 1 February 1971 and was attended by approximately 10,000 people (Sunday Mail 30 January 1971)
South Australian acts that performed included Fraternity, Moonshine Jug and String Band (later The Angels), War Machine, Fat Angel and Uncle Jack. Interstate acts included Daddy Cool, Spectrum, Chain, and Billy Thorpe and the Aztecs. Headlining the show was Black Sabbath from England in their first ever Australian show.
