I started thinking what would be a great funtion for a keyboardist that uses rootless/nonstandard/ and two handed vocings would be a looping function. You coulld play through the tune or section one time in auto-accompaniment mode and set the loop. Then you could be free to use both hand as you wish:)
Enter the " Chord Sequencer"

The Korg PA3X is the only new arranger keyboard which includes this terrific feature.
