As a performer, he excelled in various genres and was especially noted for his comedic skills [1] He was born in Cologne, Germany and died in Berlin.

[2] After a career as a cigar merchant, he started acting lessons under the tutelage of actor Leopold Teller.

In 1909, he sang in Bruno Granichstaeden's operettas' including Bub oder Mädel at the playhouse in Breslau.

Heidemann gained the reputation of being a talented comedian after performing in Berlin in 1911 on the recommendation of the composer Jean Gilbert.

During World War II, Heidemann worked as a film director and stage comedian.