Songwriter, 73, talks Mamma Mia! and AI, but becomes most animated on Brexit
https://www.theguardian.com/music/2018/jul/27/bjorn-ulvaeus-abba-was-such-a-european-idea
Björn Ulvaeus: 'Abba was such a European idea'
https://www.theguardian.com/music/2018/jul/27/bjorn-ulvaeus-abba-was-such-a-european-idea