 He moved to Oslo when he was 19 years old, and became quickly a part of the city's jazz life.In the 1980s he played the saxophone with different fusion- and soul bands («Lava», «Son of Sam», «The heavy gentlemen» and more), to return to the jazz in the 1990s.He played with the jazz quartet The Real Thing from 1992 until his death, in addition to his own «Sigurd Køhn Quartet» from 1994 and «Køhn/Johansen Sextet» from 1999.