Tony, the style is called a Skiffle, and you may already have it in your keyboard, or you may be able to download a third party style from the Korg site.
Good luck,
Gary
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PSR-S950, TC Helicon Harmony-M, Digitech VR, Samson Q7, Sennheiser E855, Custom Console, and lots of other silly stuff!
K+E=W (Knowledge Plus Experience = Wisdom.)