Abba has reunited at an Abba-themed restaurant, naturally

Abba has reunited. But in Stockholm, at an Abba-themed Greek taverna, and not really.

Agnetha Fältskog, Anni-Frid Lyngstad, Bjorn Ulvaeus and Benny Andersson, who have reportedly not been photographed in the same room together since 2008, unexpectedly showed up Wednesday evening for the opening of Ulvaeus' Greek taverna, Tyrol.

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According to the restaurant's website, diners are treated to a Mediterranean buffet while they step into the world of "Mamma Mia." Dinner is combined with theatre inspired by the musical "Mamma Mia!," and diners are invited to sing along with Abba tunes.

"You and your friends take over where the movie ends and MAMMA MIA! THE PARTY begins," the website states.

Image: Anders Wiklund /TT via AP/Associated Press

Don't go dreaming of a Swedish pop reunion, though. The foursome did not sing together and rejected suggestions they would ever perform as a group again, with Andersson saying "I don't think so."

Who knows what convinced them to say "I Do" to being in the same room, one more time. Perhaps it was the dolmades?

Additional reporting by The Associated Press