Since their spilt in the 1980s, ABBA vowed never to reform.

But in a move that delighted fans around the world, the Swedish pop quartet announced they were releasing their first new album in 39 years, and taking their hits to the stage once again.

Their new digital production has been created by the same people that do visual effects for the likes of the Star Wars and Marvel films, and means Anni-Frid, Benny, Bjorn and Agnetha can (virtually) perform as they looked in their ’70s and ’80s heyday.

Sky News has delved into the archives to look at the group from their humble beginnings, to their iconic Eurovision win, to their technological stage show next year.