Software Reccomendation
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I have Steinberg's (Cubase) app titled, "Dorico Elements 4" that does this. Not saying it's "super easy", but it is easy enough I suppose. I hooked up my Alesis VX49 MIDI controller just now to see how easy it was to use. I don't use it enough to remember how to do anything so, this was a good test.
I played a half hearted attempt at a small segment of the Goldberg Variations Aria here on a 49 key keyboard on my desk. This is what it produced.