Would you mind elaborating on this, Ted? What elements are from Yamaha that weren’t in Roland’s? Are you familiar with the EA7? That was Roland’s final shot at the pro/semi-pro market, and had quite a lot of new OS enhancements that bore similarities to other brands… Multipads, a sampler, button heavy layout etc.

Unfortunately, it was Roland’s last attempt, and many of the new features needed polishing and improving (the sampler had only 128MB - yes, MB! Yamaha and Korg had GB’s of memory🤬).

But if you’re seeing some Yamaha and Korg similarities, it might be that it’s the descendent of Roland’s last pro effort.