Abstract: A voice-controlled electronic musical instrument provides tones responsive to audible energy imparted to a microphone. An analog voltage representative of the frequency of the audible energy imparted to the microphone controls a gate signal generator. The gate signal generator decodes the analog signal into a digital word having octave and note information. The octave and note information gates operator-selected musical tones to provide a desired output signal responsive to the audible energy applied to the microphone.