BBC
What an absolute joy. Two and a half hours of Abba songs performed by a (mostly) stellar line-up with Kylie Minogue topping the bill, and the songwriting duo Benny Andersson and Bjorn Ulvaeus appearing on stage to take the tumultuous applause of a 35,000 crowd gathered in Hyde Park in London. Only the surprise appearance of their erstwhile musical and marital partners Anni-Frid Lyngstad and Agnetha Faltskog could have turned this memorable evening into a perfect one.