The Trautonium is an electronic synthesizer invented[1] in 1930[2] by Friedrich Trautwein in Berlin at the Musikhochschule's music and radio lab, the Rundfunkversuchstelle.[3] Soon afterwards Oskar Sala joined him, continuing development until Sala's death in 2002.
"Trautonium," the creation of one Dr. Friedrich Trautwein