Either the Medeli imports Yamaha style format, or Medeli need to get some PC software to do that super-pronto! There isn’t exactly a plethora of user and third party styles out there, and style fatigue is imho the #1 reason people change arrangers!
It’s a new brand, so easy Roland or Yamaha style import is going to be essential until there’s a few years worth of old Medeli styles available to fill or flesh out the gaps in the ROM styles… 🎹
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An arranger is just a tool. What matters is what you build with it..!