1. A computer-implemented process for using free-space gesture recognition to control a MIDI-capable electronic device, comprising: using a depth camera, capturing free-space gestures of a first human being simulating playing a musical device; mapping each gesture captured to a standard MIDI control signal for operating the musical device; capturing audio of the first human being, or vocal or audio from another instrument, and any additional human beings present; using the mapped MIDI control signals to control a MIDI-capable musical device while playing back the captured audio.