Reminds me of a postdoc back at uni (Axel Tidemann) who was working on an AI-drummer. I'm not a musician, but he explained to me it was easy to make a drum-program play a beat perfectly. But it wouldn't sound good. It would have no feel, no personality, no "signature style". Making it play imperfectly, but in a believable way, was the challenge. (I think it even simulated the way a drummer moves, aka not just using a pre-recorded sample of someone hitting a drum)
Same here, if you were to play the notes based on the scores, it wouldn't feel like the Metallica song, even though you played it "correct".
Same here, if you were to play the notes based on the scores, it wouldn't feel like the Metallica song, even though you played it "correct".