Why They Split: When your band consists of two married couples, things are always going to be fragile. In 1979 Björn Ulvaeus divorced Agnetha "Anna" Fältskog. Maybe they could have survived that, but in 1981 Benny Andersson split up with Anni-Frid "Frida" Lyngstad. They limped along for another year, but they ended the group in 1982. They'd been together for a decade at that point and had become so popular there was nowhere else to go but down.
Last Performance: In 1986 the four members of the group reunited on Swedish television to perform their early song "Tivedshambo" to honor their manager Stig Anderson on his 55th birthday.
Odds Of A Reunion: According to multiple reports, they have turned down a billion dollars to reunite for a world tour. "I haven't seen it in writing," Benny Anderson told Rolling Stone in 2009. "I really doubt it, if you ask me. Who would pay that? We were supposed to do a year and a half of X number of concerts, but we never even contemplated going into negotiations because we didn't want to do it." Odds are real slim for this one. We're gonna say 5%.