Swedish singer who wed ABBA bandmate Frida Lyngstad.
He taught himself how to play piano when he was ten years old.
The first instrument he learned to play was the accordion.
He got married to Anni-Frid Lyngstad on October 6, 1978, after their divorce on November 26, 1981, he remarried Mona Norklit on December 3, 1981.
He was a part of the group ABBA with Bjorn Ulvaeus.