A rare ticket for ABBA’s only ever concert in Adelaide, which 20,000 lucky fans were able to attend. Were you one of them? ABBA struggled to maintain momentum after their 1974 Eurovision win with ‘Waterloo’. It wasn’t until Molly Meldrum and Countdown – Australia's iconic music show – championed hits like ‘SOS’ and ‘Mamma Mia’ that the nation’s love affair with the Swedish pop group reached new heights. Björn Ulvaeus credits Australian fans with rescuing the band from becoming one-hit wonders, saying, ‘They came to our rescue ... I’m forever grateful!’ Their highly anticipated 1977 tour featured 11 concerts across four cities, selling 160,000 tickets and drawing thousands of fans wherever they went.