Trautonium
![Telefunken Volkstrautonium, 1933 (Telefunken Trautonium Ela T 42 (1933-1935)) a product version of trautonium co-developed by Telefunken, Friedrich Trautwein and Oskar Sala since 1931.](/Images/godic/202502/17/Volkstrautonium_MIM5313.jpg")
![](/Images/godic/202502/17/Mixtur_Trautonium5313.jpg")
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The trautonium is a monophonic electronic musical instrument invented about 1929 by Friedrich Trautwein in Berlin at the Musikhochschule's music and radio lab, the Rundfunkversuchstelle. Soon Oskar Sala joined him, continuing development until Sala's death in 2002.