This AI pianist performed an 'unplayable' piano piece and it's terrifying

Black midi music was unplayable. Watch human(ish) hands scale the piano keyboard with a mind-bending ferocity that would leave even Rachmaninov quaking in his boots. Somebody has asked artificial intelligence (AI) – in other words, a computer robot that learns – to play an'unplayable' piano piece. AI is meant to do impossible things. Like beat grandmasters at chess, and realise what we want to buy before we do.