Abba reunited at 'Mama Mia' premier

STOCKHOLM, Sweden, Feb. 14 (UPI) -- All four members of Abba gathered under one roof for only the second time in 23 years for the Swedish opening of a musical based on their songs.

Agnetha Faltskog, Anni-Frid, Benny Andersson and Björn Ulvaeus attended Stockholm's Cirkus theater production of "Mama Mia!" Saturday, the first public reunion of the group, the Telegraph reported

Faltskog, who was married to Ulvaeus, has been out of the public eye since the band split up in 1982 amid the couple's divorce. She failed to attend the fifth anniversary of the musical in London last year, citing a long-standing fear of flying.

The show, created by Judy Craymer and written by Catherine Johnson, is based on songs written by Andersson and Ulvaeus. It has racked up more than $1 billion in box office takings around the globe.