For a long time I believed it was the random arpegio on the JP8 that was used on Rio.....but nope.....it was a JP4.....Nick Rhodes said so apparently.
Jupiter 8 was heavily used in most post '82 DD music...
You want to get an idea of what a JP4 sounds like? Watch this....JP4 playing the bass....LIVE
http://www.youtube.com/watch?v=BkhwL...human%20league
DS