Sweden's legendary disco group ABBA announced on Friday that they have reunited to record two new songs, 35 years after their last single, sparking joy and surprise among fans.

"We all four felt that, after some 35 years, it could be fun to join forces again and go into the recording studio. So we did," the group said in a statement after repeatedly vowing they would never reunite.

The new songs "I Still Have Faith In You" and "Don't Shut Me Down" were recorded last summer, the band's manager Gorel Hanser told TT news agency.

The quartet split up in 1982 after dominating the disco scene for more than a decade with hits like "Waterloo", "Dancing Queen", "Mamma Mia" and "Super Trouper".