As experimental aircraft were developed as night fighters, such as the Horten Ho 229, a Schräge Musik system was incorporated from the outset. The experimental Horten Ho 229 flying wing series was proposed for consideration, with a form of unusual upward-firing armament for testing on the V4 night fighter prototype, photoelectric fired vertically mounted rockets or recoilless guns, instead of cannon armament inspired by the Jagdfaust."Hitler's Stealth Fighter Re-created." National Geographic, 25 June 2009. Retrieved: 30 September 2010.
