Anni-Frid Lyngstad sings pop.
Anni-Frid Synni , Princess Reuss of Plauen ( Anni-Frid Synni , Prinzessin Reuss von Plauen born Anni-Frid Synni Lyngstad , [ ² ɑnːɪˌfriːd ˈlʏŋstɑ ] ; [ ² anːɪˌfriːd ˈlʏŋstɑːd ] , 15 November 1945 ) , widely known as Frida Lyngstad or by just the mononym Frida ( [ ² friːdɑ ] ; [ ² friːda ] ) , is a Swedish pop and jazz singer . Born in Norway to a Norwegian mother and a German father , she grew up in Sweden and reached international stardom as a member of the pop group ABBA , which has sold over 380 million albums and singles worldwide , making them one of the best-selling music artists in history .