Björn Kristian Ulvaeus often credited as Björn Ulvæus is a Swedish songwriter, composer, musician, writer, producer, a former member of the Swedish musical group ABBA, and co-composer of the musicals Chess, Kristina från Duvemåla, and Mamma Mia!. He co-produced the film Mamma Mia! with fellow ex-ABBA member and close friend Benny Andersson.
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Buy Discography: 
| Play | Soundtrack | Movie/Serie | Type | Buy song | |
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| Young folks | Druckfrisch | performer |
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| Young Folks | Angus, Thongs and Perfect Snogging | performer |
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| Young Folks | Donkey Punch | writer, performer |
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