Virtual Midi Piano Keyboard is a MIDI events generator and receiver. It doesn't produce any sound by itself, but can be used to drive a MIDI synthesizer (either hardware or software, internal or external). You can use the computer's keyboard to play MIDI notes, and also the mouse. You can use the Virtual MIDI Piano Keyboard to display the played MIDI notes from another instrument or MIDI file player. To do so, connect the other MIDI port to the input port of VMPK.

VMPK can help you to change sounds in your MIDI synthesizer, but only if you provide a definition for the synthesizer sounds first. The definitions are text files with the .INS extension, and the same format used by Qtractor (Linux), and Sonar (Windows).

88 is an arbitrary number of keys used by (most) modern piano manufacturers, but organ and synthesizer manufacturers don't always follow this convention. VMPK can be customized to display from 1 to 10 octaves. Using 7 octaves it shows 84 keys, and for 8 octaves it shows 98 keys. There is no way to display exactly 7 and 1/4 octaves.

The license of this software is Free, you can free download and free use this audio utility software.