Who is Agnetha Faltskog's son?
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14 fascinating facts about ABBA singer Agnetha Fältskog
8. Who is Agnetha Faltskog's son?
Agnetha and Bjorn's son Peter Christian Ulvaeus was born in December 1977. Aged nine, he collaborated with his mother for the album 'Kom följ med i vår karusell' in 1987.