Anni-Frid Synni, Princess Reuss of Plauen (German: Anni-Frid Synni, Prinzessin Reuss von Plauen; born Anni-Frid Synni Lyngstad, pronounced [ˈlʏŋstɑːd], 15 November 1945), widely known as Frida Lyngstad or by just the mononym Frida, is a Norwegian-born Swedish pop and jazz singer. Born in Norway to a Norwegian mother and a German father, she grew up in Sweden and was a member of the Swedish group ABBA between 1972 and 1982.