Bachus,

ARPS (on most synths) are triggered by notes played on the entire keyboard. In the AUDYA series, these are triggered either by notes, chords or both and are associated with (but NOT restricted to) the style played.

As you know with most 'technical' equipment, the manual only tells 3/4 of the story. The rest you have to 'experience' in person, but it could have been better written. We will address this in the video with lots of illustrations ofcourse.

Thanks,