PIANO17.ZIP An OS/2 presentation manager app. Displays a window with a graphical piano keyboard and sliders and buttons. Use the mouse to click notes on the keyboard, and the app sends appropriate Note On and Note Off MIDI messages out of your MIDI interface. So, you can use it as a controller to play and test external MIDI gear. (For sound cards whose MIDI interface is tied to an internal "MIDI Synth", as most are, you can use this app to play your card's internal sounds). There are many graphical sliders which output various MIDI messages such as Channel Pressure, Aftertouch, Volume, Mod Wheel, Pitch wheel, etc, so that you can test how your MIDI unit is responding to these messages. Furthermore, you can select Program Changes from a list of GM Patches. PM Piano can generate messages on all MIDI channels simultaneously, or only ones that you select. PM Piano also turns your computer keyboard into a Piano keyboard. Requires MPUDEV driver or equivalent.