Rudiger Lorenz was a German electronic composer from Mainz. He was a collector of vintage synthesizers and modular systems. He also made his own modular synthesizers such as the "Loran Modular" and the "Formant Modular". His music is mostly experimental and arppegiator driven. His first albums were in cassete format (Queen of Saba, Silver Steps, Wonderflower...) and considered to be extremely rare. One of my favourite German electronic composers.
Note: for more Rudiger Lorenz, search for "Silver Steps" here in this blog.