Through the Korg forum I was directed to an offer on Ebay by someone in Australia (guess it won't be you Dennis...) who offers a most interesting (to say the least) collection of Korg PA styles that should play in virtually all PA arrangers. I loadede them into my PA800 and was pleasantly surprised. there is some really good stuff there. I have only skimmed the surface so far but can warmly recommend it to any Korg player.
http://www.ebay.com/itm/Premium-styles-for-Korg-PA500-PA588-PA800-PA2X-PA3X-/221232719487

While going thru them I hit upon a style called Vocal Pop which instantaneously prompted me to the following improvisation, mind you the right hand sounds are from my Yamaha PSR-750:
https://www.box.com/s/uthgyowwzf8yrichsasg

Which leads me to a final observation, slightly off-topic here admittedly, but I have just purchased a secondhand Roland BK-7m module to compliment my Korg PA800 and Yamaha PSR750.
All three of them would also have allowed me ( but just barely) the single acquisition of either a tyros 4 or the PA3X, go figure...............

regards,
John