Providing a set of logic converter, Randy 7 is a sound device that invites the audience to converse using the body instead of mouth and words. A ‘conversation history’ is created with two motor-controlled pens in the device in charge of the calculation and the following execution of the drawing. Based on the sensing mechanism of the electronic musical instrument Theremin, the user’s body movement is transcribed into audio signals; Within the machine, the signals serve as the voltage variation for activating the motors. Sound variation based on the arm movement is hereby the ultimate factor in the manipulation of the pen executing the documentation.