This utility allows you to visualise in real-time polyphonic messages (polyphonic aftertouch) messages received at any of its MIDI inputs. Both notes played and polyphonic pressure applied are shown on a piano keyboard display. The octave range can be shifted by up to two octaves in either direction. The utility has numerous connection options, allowing direct connection to your computer's MIDI devices as well as connectivity to other Voltage Modular modules and to the host when run as a VST plug-in.