Sanna, Shirley & Sonja are a Swedish supergroup that teamed up in 2008 for the chart-topping holiday album Our Christmas. Comprised of Sanna Nielsen (born on November 27, 1984, in Edenryd, Sweden), Shirley Clamp (born on February 17, 1973, in Borås, Sweden), and Sonja Aldén (born on December 20, 197...

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