ABBA’s Björn Ulvaeus says group’s reunion is an “immense risk”

ABBA’s Björn Ulvaeus has said that he thinks the legendary group’s comeback is an “immense risk”.
The Swedish pop icons returned with their first album in 40 years, ‘Voyage’, last November and are due to present a string of “revolutionary” concerts at London’s Queen Elizabeth Olympic Park from May 27.READ MORE: James Righton on putting together ABBA’s new live band: “They had to be as good as the originals”&ls