Harmony Pad allows you to easily play music on the go, with the instrument you like, in the scale you like. Harmony Pad also allows you to play the main chords of the chosen scale along with the melody.
The principe is simple : the pad contains six lines, the three first lines are for the notes, the three last ones are for the chords. You can move the root by +/- 1 semi-tone or +/- 12 semitones with the green buttons. You can access the settings (instruments, scale, volume, etc.) with the yellow button.