A lot of companies that make workstations as well as arrangers are rather painting themselves into a corner, because traditionally arrangers are based around that company’s workstation technology.
But the trend nowadays is for extremely synth focused keyboards with very little attention to traditional sampled instruments, and it’s only getting stronger. Which leaves the VERY traditional instrument focused arranger somewhat lost for significantly new technologies to build on. A few more years of this, and arranger manufacturers could end up with having no really appropriate engine to power the arranger other than legacy stuff. Plus we are such a tiny market compared to the synth workstation demographic that it would be difficult to justify much R&D just for us...
Times and technologies move on, evolve, wax and wane. Some of the oldest amongst us watched the same thing happen to the flourishing home organ market. It’s happening slowly, but it seems we are watching it again...
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An arranger is just a tool. What matters is what you build with it..!