First off super cool project with impressive results!! I am not a musician but I was fairly reliably (>75%) able to identify the NN. It took listening to a few examples but I quickly realized that smoothness was the give away. Humans make much more significant jumps when going from soft to aggressive or visa versa where the NN tended to smooth out these changes. I'm going to have my sister (a classically trained pianist) take a listen and see what she thinks.

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