Maybe we need something like a 'Layers' feature in future arrangers? You start out with a pretty simple part, then layer additional notes on top of it to make it busier, and give the player a control to bring it in and out at will? I know it sounds a BIT like what a multipad can do, but it's more than that...

I must confess, some of the ideas in the Audya ought to be looked at VERY seriously by the Big3. There seems to have been very little innovation for the last few years in BASIC arranger functionality. Sure, there's MORE of what we already had, more fills, more variations, more Intros/Endings etc., but there's been very little NEW added to the root functionality. The Audya's 'random' addition of extra flourishes fro time to time seems on the right path, to me.

What we are always looking for is variety, and a recreation of the 'live' experience. And, in my book, that involves some way of choosing whether you have a 'busy' or a 'studio' sideman as you play. Time for the Big3 to step up and redefine auto accompaniment, IMO. I'm tired of 'me too' features and more of the same stale pudding...
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An arranger is just a tool. What matters is what you build with it..!