STOCKHOLM, Sweden, May 8 (UPI) -- Swedish singer-songwriters and former ABBA members Bjorn Ulvaeus and Benny Andersson have introduced their first new tracks in 15 years.

LONDON, April 12 (UPI) -- Swedish songwriter Bjorn Ulvaeus, who helped write the ABBA tunes used in the movie "Mamma Mia!," says he's opposed to a sequel despite the original's success.

VISBY, Sweden, March 22 (UPI) -- Former ABBA band member Bjorn Ulvaeus has been granted a variance so he can build a home and studio on Sweden's Furillen island, a county official says.

STOCKHOLM, Sweden, Oct. 15 (UPI) -- Swedish singer and composer Bjorn Ulvaeus, best known for his work with the defunct pop group ABBA, reportedly has been found innocent of tax evasion.

LONDON, July 7 (UPI) -- Bjorn Ulvaeus and Benny Andersson said their Swedish pop group ABBA has no plans to perform together again.

STOCKHOLM, Sweden, March 23 (UPI) -- Members of the Swedish pop group Abba won their case on the authorship of the musical "Kristina fran Duvemala," the latest event in a 15-year dispute.

STOCKHOLM, Sweden, Feb. 7 (UPI) -- Abba singers Benny Andersson and Bjorn Ulvaeus took their 15-year-old dispute over authorship of the musical "Kristina fran Duvemala" to a Stockholm court.

LOS ANGELES, Jan. 11 (UPI) -- Academy award winner Meryl Streep has signed on to headline the film adaptation of Swedish pop music group ABBA's musical "Mamma Mia!"

STOCKHOLM, Sweden, Jan. 4 (UPI) -- The Swedish Tax Board has demanded ABBA star Bjorn Ulvaeus pay it more than $11.6 million for tax discrepancies. Stockholm's Local newspaper said Swedish authorities claim Ulvaeus owned a company based on a low-tax island in the Netherlands Antilles that