A duo of Bernd Kastner (born in 1957 in Düsseldorf, Germany) and Siegfried Michail Syniuga, Strafe Für Rebellion ("Punishment For Rebellion" - later known as Strafe F.R.) started in 1979. Over the course of several albums, they developed a personal style of abstract instrumental music that owed a lot to their use of home-made instruments, found objects and field recordings. They dissolved quietly in the mid 90s, after releasing the "Pianoguitar" album. Strafe FR returned to the scene in mid 2014 with a new album entitled "Sulphur Spring".