The big ABBA festival has already begun. Next Saturday it will be exactly 50 years since Agnetha Fältskog, Björn Ulvaeus, Benny Andersson and Anni-Frid Lyngstad won the Eurovision Song Contest (ESC) for Sweden for the first time with “Waterloo”, and that is something to celebrate.

And so it happens that the ESC is taking place in Sweden again this year. The organizing broadcaster SVT has announced all sorts of surprises; the film documentary “ABBA – Against All Odds” premiered ten days ago.

An all-star video was also released over the Easter weekend in which 26 artists from Sweden gathered to musically thank ABBA - of course with a song by the band: “Thank You For The Music”.

The best-known participant is also the oldest, 87-year-old Siw Malmkvist. In Germany she is best known for her song “Liebeskummer is not worth it” from 1964, but also for her participation in the ESC for Germany (“Primaballerina”) in 1969.

A man can also be seen briefly at the piano: Benny Andersson, who wrote the global hit “Thank You For The Music” together with Björn Ulvaeus in 1977. The two will definitely play a role in the next few weeks. But one thing had already been ruled out in advance: ABBA would not perform as a quartet.