NTS Audio Labs released Scale Wizard, a freeware VST MIDI Plug-in for Windows specially suited for melodic dance or techno producers who want to play notes and chords in any mode, key or scale without learning music and without making harmony errors.
Scale Wizard is basically a MIDI filter/corrector that permits to play in any key, mode or scale just playing always the white keys. It will transpose any scale and key on the white keys while all the black keys will be corrected.
In this way any MIDI score can be corrected on the right harmony. The plug-in can be used as a chord generator and as a chord scales generator with a lot of useful presets. Any key of the keyboard will be corrected so there is no possibility to make harmony errors.
To Download the free plug-in registration is needed.