I’d look around for an E60 if you’re continuing your piano studies. The extra notes make all the difference (everything up to and including Beethoven can fit a 76!).

Mind you, at this point, I’d say a used BK9 is your far better bet. It’s got pretty much everything the E50/60 had (except the touch screen), and so very much more…

If you can find one!
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An arranger is just a tool. What matters is what you build with it..!