Today is the 50th anniversary of ABBA's Eurovision success.
The Swedish pop group first came to international attention when the claimed success at the 1974 song contest in Brighton with chart-topper 'Waterloo'.
50 years on, they're still selling out virtual concerts at the ABBA Voyage arena in London.
Broadcaster Dave Fanning says you can draw comparisons between the group and superstars today, like Taylor Swift:.
