The four members performed a song together at a private party in Stockholm
Four members make first public appearance since 2008
The instrument is expected to fetch over £600,000
He confirmed that the Swedish pop group still have no plans to reunite
The 70s pop veterans admit, however, to having "never quite understood" punk
The band could only get tax deductions on clothes that were "in no way suitable for everyday wear."
Singer says band could mark 40th anniversary of 'Waterloo' with a concert
Eurovision group's greatest hits collection has sold more than 5.1million copies
Singer Agnetha Faltskog also regrets the band's lack of choreography during live shows
'We Write the Story' will be performed at this year's event in Sweden on May 18