Paul Hagen was one the most famous Danish actors after the Second World War. He was born on 19th of March 1920 in Copenhagen. His father was painter named Åge Falck Rasmussen, his mother was an opera singer named Anna Hagen. Hagen was accepted into Frederiksbergs theatre school in 1944. He finished his education as an actor in 1945. He had his debut as an actor in 1944 in the play Livet er jo dejligt on Riddersalen in Copenhagen. He then worked at Aarhus theatre (until 1951). In 1953 he got famous for a song he made for Fiffer Revyen. The song where entitled: Lille Lise let-på-tråd. He worked in various theatres throughout the 50s, 60s, 70s, 80s and 90s. He finally said goodbye to theatre in 1998. Hagen had his debut in film in 1952, with the film: Kærlighedsdoktoren.