London, April 12 : Bjorn Ulvaeus, who co-wrote the Abba songs on which Mamma Mia! is based, has become embroiled in an extremely awkward dispute with his fellow producers over whether such a sequel of the musical should be made.

At a party at the Café de Paris to celebrate the 10th anniversary of the hit West End show that inspired the film, the Swedish musician said he's against a sequel to the film.

"It wouldn''t work. I don''t think we would do a sequel. We have moved on to other projects now," the Telegraph quoted Ulvaeus as saying.

Melbourne, Apr 7 : ABBA star Bjorn Ulvaeus is just not in favour of the band's reunion because he feels that it would disappoint their fans.

The 4 member group - including Benny Andersson, Anni-Frid Lyngstad, Bjorn Ulvaeus and Agnetha Faltskog - parted in the early 1980s.

Though it was being anticipated that the band would reunite for a gig to thrill the fans, Bjorn has rebuffed the idea of a reunion.