Thing about sync stop is, for one thing, you had better not accidentally lift all your fingers before you need it (a chord change at the same time as a note change, for instance)! Talk about an awkward moment..!

The other thing is, most of these mid-song pauses include ritardandos, so the simple sync stop doesn't really cut it. I'd rather use the stop button (on a footswitch, preferably) than sync stop...

Mind you, if you don't mind doing Performance changes mid-song, there IS a much easier solution...

Simply record your mid-song pause as one of the Endings. Then, when you get to the pause's end, hit the button for the next Performance, set up to carry on the tune...

But if you are determined to make one style do all the work, the Endings can be used as mid-song pauses.
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An arranger is just a tool. What matters is what you build with it..!