We write to you with the conclusions of our investigation into the synthesized audio transmissions picked up by the deep space telescope at regular intervals since 1986. The source was traced to two brothers in Kawasaki, Japan, who identified themselves as Satoshi and Makoto. When we raided the building, they were huddled around a synthesizer manufactured by the Casio Corporation, model number CZ-5000.
In their archives we discovered a wealth of colourful and ear-pleasing material created entirely using this music-making device in the early 1990s. We asked them to provide copies so that we could make these compositions available to the public for the first time. They handed us a compact disc that bore the handwritten code “ST006”.