The four ABBA members Agnetha Fältskog, Björn Ulvaeus, Benny Andersson and Anni-Frid Lyngstad celebrated the 50 years' anniversary at a private party held in Berns Salonger in Stockholm.
Anni-Frid describes the celebration of Ulvaeus and Andersson as an emotional night:
– It was absolutely amazing. A lot of emotions. Weve made this journey throughout our history. Benny and Björn in particular. Its been very nostalgic.
ABBA won Eurovision Song Contest 1974 representing Sweden with the song "Waterloo", and are the most succesful winners of Eurovision ever. Previously the group have been offered $1 billion to reunite.