In 1947, Anni-Frid, her mother Synni, and her grandmother Agny Lyngstad were forced to move to Sweden because of fear of reprisals from the Norwegian population, who were angry at and vengeful towards those who had dealings with the Germans during the occupation, which resulted not just in insult, but also in forced separation of infants from their parents and relatives. Synni died before Anni-Frid was two, so she was brought up by her grandmother in the town of Torshälla, near Eskilstuna, Sweden.
Lyngstad believed that her father had died when his ship to Germany was sunk during the war. However, after the German teen magazine Bravo published her biography and a background story in 1977, she discovered that her father was alive and they were reunited that year.
At the age of 11 she made her stage debut at a Red Cross charity event. Two years later, she started working as an underage vocalist in a dance band, and performed with different bands for a decade. She met her first husband, Ragnar Fredriksson, in 1961. Together they had two children: Hans, born in 1963, and Lise-Lotte, born in 1967.
On September 3, 1967, Frida won a talent contest in Stockholm. Immediately after her victory she appeared on national television singing her winning song. Soon afterwards Frida signed to EMI records. Frida didn’t have much commercial success as a recording artist up to the early Seventies, but she was a fairly well-known stage artist. In 1970 she was part of a cabaret show together with her fiancé, Benny Andersson, along with Björn Ulvaeus and his fiancée, Agnetha Fältskog.