There's an awful lot of that Atelier Demo that I was going 'got that.. got that... got that too'
To be honest, other than some of the the theater organ stuff and some of the church voices, what little I heard that ISN'T already in a G70 didn't impress me much, with the exception of that soprano solo voice (killer, but how I'd use it, I don't know!).
That three-way split on the 76 note manual... pure G70!
After reflection, it looks the other way around to me... Roland are basing the Atelier on THIS generation of arrangers, rather than this Atelier being the future of the arranger series.
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An arranger is just a tool. What matters is what you build with it..!