[1] He studied in Copenhagen at the Royal Chamber under the tutelage of baritone Albert Hoeberg (1879–1949) and the tenor Hermann Spiro.

[1] Hansen made his operatic stage debut in Copenhagen at the Royal Danish Theatre in 1908 as a tenor, when he appeared as Sverkel in the romantic opera Liden Kirsten.

[1] Hansen also performed the roles of Don José in Bizet's Carmen and the hunter Konrad in the romantic opera Hans Heiling by Heinrich Marschner.

From 1919 Hansen began appearing in cinema dramas, and that year he starred in the silent film The Woman at the Crossroads, directed by Georg Jacoby.

The next year he was chosen to appear as the American love interest to Mia May's heroine in the latter episodes of the eight part epic The Mistress of the World (Die Herrin der Welt).