I purchased a Ketron SD5 from George Kaye.

I recorded two songs to demonstrate how the styles sound and also to show the riff feature. The first song uses the organ_club style. I used the jazz organ and rodes piano. After the rodes solo, there are twelve bars of a riff progression. I just hit the riff button while holding a C chord and the riff feature generated a blues progression in the key of C. The second song is spanish eyes and uses the beguine style.

I am not a professional musician and recorded the songs quickly with no editing or mixing. I am posting them so you can hear the keyboard, not my mediocre playing.

Here are the links:
http://cpajimp.tripod.com/sash.mp3
http://cpajimp.tripod.com/spanish_eyes.mp3