Last night, Nate and I were able to sucessfully and intuitively control up to 3 or 4 individual drums based on different sounds vocalized into a mic. The bass drum would play when ‘oooh’ was sung, a snare when ‘eee’ was sung and a cymbal when ‘aaah’ was sung. There are still some kinks in the system, but as a proof of concept, it works fairly well. The mapping between input sound and MIDI event are learned in real time so you are not restricted to different vowel sounds. The 3 distinguishing sounds could have just as easily been a clap, growl and whistle. The code: fftknn.