This program shows you the way to play any piano chord. Choose any in the lists and it will indicate which keys you must press.Inversion are also possible. In the mean time the chord is displayed on a staff (both clef) and played either at once or as an arpeggio (ascending and descending). User can save each chord as a MIDI file.Scales are also displayable (Major Dorian Blues...)The opposite process can be done: select the keys pressed on the virtual keyboard or play directly an external MIDI keyboard it will tell you which chord is played !A Chord sequencer will allow you to set-up a chord pattern. Of course you can save it and also export it as a MIDI file.