As someone who has failed at learning every instrument they've ever tried to pick up, and has a $3k banjo just collecting dust in a case about 15 feet from me, its just so impressive to see someone get so good at playing an instrument that their hands are a blur while they play you can't even keep up with it.
The muscle memory and skill and precision involved is just fucking impressive as fuck. Nothing in the electronic, mass market, bullshit auto tuned pop music universe can compare.