The Swedish pop group announced Friday on its official Instagram account that an earlier announced avatar plan of the band, dubbed "Abbatars," helped rekindle the magic.
"The decision to go ahead with the exciting ABBA avatar tour project had an unexpected consequence," the statement posted on Instagram says. "We all felt that, after some 35 years, it could be fun to join forces again and go into the recording studio. So we did."
The return to the studio resulted in two new songs, one of which, "I Still Have Faith in You," will be featured in a TV special set to air in December on NBC and the BBC.
Fans have long rallied for the band -- whose hits such as "Take a Chance on Me," "Dancing Queen" and "Voulez-Vous" remain popular -- to perform together again.
The group, made up of members Agnetha Fältskog, Björn Ulvaeus, Benny Andersson and Anni-Frid Lyngstad, disbanded in 1982.