Don E. Branker, stated that the video from that performance no longer exists. Other important interests Köllen was also an experienced auto mechanic and race driver, and had plans to continue in this area in the future as well. Death On 3 May 1977, Köllen died from carbon monoxide poisoning at the age of 27 while listening to some of the studio tracks in his car's cassette player while running the engine in his garage. A little while after his death, German group Birth Control wrote and recorded a song as a tribute to Helmut Köllen entitled "We All Thought We Knew You", which was featured on their 1977 album Increase. His debut solo album You Won't See Me was issued posthumously by Harvest in Germany in October 1977. It is dedicated to Köllen's parents. Discography Notes References 1950 births 1977 deaths Progressive rock musicians German rock bass guitarists Male bass guitarists German rock singers Deaths from carbon monoxide poisoning 20th-century German male singers 20th-century bass guitarists 20th-century German male musicians German male guitarists