Many MicroKorg enthusiasts focus on it's synthesizer functions, but it's also a vocoder, and nowhere is that more apparent than in this video. It will teach you how to connect an electric guitar and a mic to your MicroKorg and use them together so that you can hear your voice on your guitar. It's very worth it.
From the Creator:
p. 34 Microkorg Owners Manual
1. connect the included mic to the AUDIO 1 CONDENSER jack, and connect the output jack of your external device to the AUDIO IN 2 LINE jack. Use the VOLUME 1 and Volume 2 knobs to adjust the levels so that the audio signals are output to AUDIO IN 1 and 2
2 When you raise the MIXER "INST LEVEL" (knob 2) value, the input signal from AUDIO IN 2 will be input to the band pass filter (synthesis filter) of the carrier.
3. When you raise the MIXER "OSC 1 LEVEL" (knob 1) and play the keyboard, the OSC 1 waveform will be input to the the band pass filter of the carrier
4. If you set the AUDIO IN 1 "HPF GATE" (knob 4) to Disable (DIS), the high frequency portion of the input signal from the AUDIO In 1 jack will also be output.