Cygnus X (1) 285 views 0 favorites Cygnus X was a trance music project from Germany named after the famous X-ray binary star Cygnus X-1. It began as a collaboration between Matthias Hoffmann and Ralf Hildenbeutel, who later left. Other projects of the pair include A.C. Boutsen, Brainchild and Dee.FX. Their sound extends from hard to ambient trance.