You've got to be kidding, right?

You are honestly going to tell us that the effort of customizing an MS is no more than what most users put in to customization of their closed arranger?

Pull the other one, it's got bells on it...

There is a TINY minority here at SZ that even assemble their own 'Frankenstyles' out of pieces parts of other styles they have. Then, of THAT tiny minority, there's a tiny minority that actually program styles from scratch. And then, out of THAT tiny minority, there's an even tinier minority that create from scratch the sounds that the style is played on....

Give it a rest guys...

Let the guys who actually have an MS SHOW us how easy it all is, eh? Still waiting. At least for something superior to a closed arranger.
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An arranger is just a tool. What matters is what you build with it..!