sentences:  Internationally, he is best known for the song "Stress" that he performed in the Eurovision Song Contest of 1968.He sang in the Kjell Karlsen's Orchestra (1962–70) and was releasing singles during that period.He retired from full-time professional singing in 1970 and became an insurance company agent (although he did perform in the Norwegian national finals in 1971 and 1977 and was one of the judges in the 1978 final).