 Langberg debuted as Lotte's little brother in Ditte menneskebarn (1946) and also starred as a child in the film De pokkers unger (1947).He became a trained actor from Odense Drama school and was then assigned to various theaters, including ABC Theatre, Odense Theatre, Great Hall, Aalborg Theatre, Circus Ib and the Apollo Theater.He starred in around 40 films in the 1950s and 1960s, where he often played the cocky, real first love, who gets his beloved at the end.