Just don't get TOO enthusiastic about this capability. For one thing, it is streaming of just ONE loop at a time, you are not going to be able to stream multiple loops (like you would need for guitar loops, or separate breakbeat loops from the drum track, etc.)...

And it's not going to chord follow.

But the thing for me is, there aren't that many drum loop libraries out there that are laid out like arranger styles. Sure, you can find maybe four loops that increase in intensity (sometimes) and you can find fill loops that connect them (sometimes), but you rarely ever get Intro or Ending loops that work well as needed.

I mean, they have had this capability on the SD-1 for quite a while. But how many Ketron users make all their own audio drum tracks (other than maybe ethnic musics poorly represented by ROM styles)..?
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An arranger is just a tool. What matters is what you build with it..!