In a interview, Fredrik Mannberg stated that Fredrik Degerström never really was a full-fledged band member, but merely a tryout applicant as vocalist, but didn't cut it which compelled Mannberg to do the vocals himself.
Just as well, drummer Cobra was never a real member either. He was asked to join the band for a photo shoot. Although he claimed he could play the drums, he was never equipped with the skills or know-how to play in a serious band.