1974: ABBA – Waterloo

ABBA are the most successful pop act to ever come from Eurovision.

The Swedish band – made up of Anni-Frid Lyngstad, Agnetha Faltskog, Benny Andersson and Bjorn Ulvaeus – became a global phenomenon after their triumph and their impact on pop culture is still felt today thanks to their hologram show 'ABBA Voyage' in London.