Bestand:Mixtur Trautonium.jpgDescriptionMixtur Trautonium.jpg Mixtur Trautonium. One of two instruments worldwide. Deutsches Museum Bonn Date 8.10.2006 Source Own work Author User:MatthiasKabel
Bestand:Subharchord.jpgSubharchord, a subharmonic synthesizer similar to Mixtur trautonium but with a keyboard, was invented in 1962 by Ernst Schreiber at east Berlin, German
Bestand:Subharchord (retouched).jpgSubharchord, a subharmonic synthesizer similar to Mixtur trautonium but with a keyboard, was invented in 1962 by Ernst Schreiber at east Berlin, German