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2 stepping motors, mechanical and electro-mechanical components, blower, wooden case, computer. The machine is a simplified model of the human vocal track. It has movable lips (either closed as for «oo» or open as for «ah») and a movable tongue which enables it to sing a range of vowels and diphthongs. Its larynx, a tuneable air-blown reed, has a range of one octave. It is a baritone.
