He was 18 years old when he and Lars "Lazare" Nedland formed the avant-garde metal band, Solefald.

On January 24, 2005, Sturmgeist released their first full-length, entitled Meister Mephisto on the record label, Season of Mist.

On August 26, 2005, Cornelius also announced on his official website that he would finally be recording an electronica album in Sofia, Bulgaria that he had been planning for six years.

He has described the project as a combination of electronica, darkwave, hip hop, drum'n'bass and black metal.

He is also involved with a Paris-based literary review entitled Avant-poste, which was nominated for the French CNOUS annual award, as one out of ten cultural projects.

He has continued to have a successful career as an author and was quoted in an interview stating "Being a writer is my job.