五十年前，四名年轻人相遇，然后组成瑞典超级组合ABBA。及后他们售出四亿张唱片。二十年前，结集27首ABBA金曲的音乐剧《妈妈咪呀！》在伦敦西区上演，该剧至今已有六千万人次观看。虽然这组合只维持了大概十年，并且在1982年解散，但是ABBA至今依然人气不减。ABBA似乎永不过时，而这个节目正是为此制作。就如乐队成员安妮-菲德所言「ABBA永远不会被遗忘。我还不时收倒年青人寄来的信，而我的年纪足以当他们的祖母」。

50 years ago, the 4 young people who became the members of the Swedish supergroup Abba first met. They went on to sell over 400 million records. 20 years ago, the musical Mamma Mia!, featuring 27 of their songs and to date seen by over 60 million people, premiered in the West End. Despite their existence as a band lasting only about a decade and ending in 1982, Abba are as popular today as they have ever been. Abba seems to go on forever – and this program is a celebration of that. As band member Anni-Frid says in the program, “Abba will never disappear. I get fan mail from teenagers – I could be their grandmother!”