Redgum, featuring the unmistakable voice of John Schumann, are an important band in the history of Australian music, responsible for political folk-rock that had an actual influence on the politics of the time. They are best remembered for their protest song "I Was Only Nineteen (A Walk in the Light Green)", which underwent something of a popular revival during Australia's participation in the second Iraq war. The band formed at Adelaide's Flinders University in 1975 while the members were attending the same politics and art class.

Their first album, "If You Don't Fight You Lose", debuted in 1978. It was recorded after a radio station told the band that approximately 200 people were requesting they make copies of the early demo recording they had been broadcasting. However, it was their live album "Caught in the Act", released in 1983, that made Redgum a national and enduring sensation, with "I Was Only Nineteen (A Walk in the Light Green)" going to number one.