Björn Kristian Ulvaeus, born April 25 1945 is a Swedish songwriter, producer and member of ABBA, composing most of their songs with Benny Andersson. He is the co-composer of the musicals Chess, Kristina från Duvemåla and Mamma Mia!. He co-produced the film Mamma Mia! with Benny.

See also Edit

Björn Ulvaeus on Wikipedia

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