![ABBA on Twitter: "Today in 1981, ABBA are in the Polar Music Studios recording a special song entitled 'Hovas Vittne', which they have written for their manager Stig Anderson's 50th birthday. Only ABBA on Twitter: "Today in 1981, ABBA are in the Polar Music Studios recording a special song entitled 'Hovas Vittne', which they have written for their manager Stig Anderson's 50th birthday. Only](https://pbs.twimg.com/media/EsB5OMXXUAEpF2g.jpg)
ABBA on Twitter: "Today in 1981, ABBA are in the Polar Music Studios recording a special song entitled 'Hovas Vittne', which they have written for their manager Stig Anderson's 50th birthday. Only
![Telegraph Music on Twitter: "ABBA's business brain: how Stig Anderson built – and almost broke – Sweden's greatest export https://t.co/gdGCxfFT55 https://t.co/UIe7w94LrI" / Twitter Telegraph Music on Twitter: "ABBA's business brain: how Stig Anderson built – and almost broke – Sweden's greatest export https://t.co/gdGCxfFT55 https://t.co/UIe7w94LrI" / Twitter](https://pbs.twimg.com/media/DhW82qOX0AARmIM.jpg)
Telegraph Music on Twitter: "ABBA's business brain: how Stig Anderson built – and almost broke – Sweden's greatest export https://t.co/gdGCxfFT55 https://t.co/UIe7w94LrI" / Twitter
![Anni-frid Lyngstad and Agnetha Faltskog of ABBA. In the background, Stig Anderson. Foto:Olle Lindeborg Kod: 190 COPYRIGHT SCANPIX SWEDEN Stock Photo - Alamy Anni-frid Lyngstad and Agnetha Faltskog of ABBA. In the background, Stig Anderson. Foto:Olle Lindeborg Kod: 190 COPYRIGHT SCANPIX SWEDEN Stock Photo - Alamy](https://c8.alamy.com/comp/2GJ8876/anni-frid-lyngstad-and-agnetha-faltskog-of-abba-in-the-background-stig-anderson-fotoolle-lindeborg-kod-190-copyright-scanpix-sweden-2GJ8876.jpg)