She is the elder child of Björn Ulvaeus and Agnetha Fältskog, members of the pop group ABBA.
[3] Ulvaeus made her musical debut in 1981 at the age of 8, releasing the album she recorded alongside her mother the previous year, Nu tändas tusen juleljus ("Now a thousand Christmas candles are lit").
The album, which was produced by Fältskog alongside Michael B. Tretow, consisted of 18 traditional Christmas carols and children's songs in Swedish.
[5] Ulvaeus returned to the big screen in the role of Sofia in the film Meningen med alltihopa (2006).
[4] Ulvaeus again returned to the big screen, playing Birgitta Ståle in the Swedish film Quick (2019).