BK-9 (and the older G70/E80) has a system where the harder you play, the harder the style track plays, but this can be edited to be an on/off function too. But I’ve never heard of a system that picks up style parts from later variations when you play harder.

This might work really well, but probably only with styles written with the function in mind. Not sure if I’d dig small snippets of later variation popping in and out as I play harder and softer. Is there any control over the strength of the playing necessary to trigger it, or if it persists for a window of time and takes more than just one frisky note to start it?

The Dynamic Arranger from Roland’s is best used subtly, but when you dial it in with the right style, it’s remarkable. Kudos to Yamaha for pushing things along in how the arranger responds to YOU, but it’s curious it’s just this line. I would have thought, if this works well, add it to ALL the SX series and the Genos…

And yes, sure it could be approximated with a boatload of gear, a boatload of effort and a boatload of tinkering, but what can’t? LOL Still can’t figure out any way to trigger it by playing MORE, though. Velocity is easy to quantify, but ‘busy-ness’ is a bit harder to detect and use. I wonder how Yamaha pulled this off? Number of notes down? Number of notes played per quarter note? Speed of notes?

Can’t really think of a black box that could detect that…

But yes, things like this are what I think we need to push arranger realism. The more the style picks up on HOW you are playing not simply the notes, the more it can sound like a real live band. The good ones listen to each other, why not our arrangers?!