In April 1974, 500 million television viewers across Europe witnessed the bizarrely thrilling sight of four garishly-dressed unknowns from Sweden storm their wa... » 

In April 1974, 500 million television viewers across Europe witnessed the bizarrely thrilling sight of four garishly-dressed unknowns from Sweden storm their way to victory in the Eurovision Song Contest. The song was 'Waterloo'. Abba had arrived. «