As pop supergroup ABBA celebrates the 50th anniversary of their smash hit Waterloo, the history book on the shelf is always repeating itself with Sweden preparing to host Eurovision.
April 6, 1974 is the day ABBA was announced to the world as the band that won the Eurovision Song Contest with Waterloo, which topped music charts in many countries.
The song was written specifically for the contest after the group came third in the previous year, and audiences rewarded the band for their choice.
