Note that at 0:18 the pianist gives a signal to the drummer and bass player to start into trading fours, i.e., four bars of piano, four bars of drums, in an alternating pattern.

Now, I don't know about the Pa3X, but Variation 4 of the style called Bebop1 on my Pa1XPro plays this pattern. If you have a Pa3X, give it a go. Maybe it's the same.

The trick is to play the first 12, 24, whatever, bars of your tune in Variation 3, then switch into variation 4 for this 'trading fours' for as long as you want, then break back into variation 3 to keep on swinging. It's a lot of fun to jam away on this.