Never judge a book by its cover. 🎸🤯 John Wines looked like a polite music teacher... until he plugged in his guitar and absolutely SHREDDED the stage! Did your jaw drop as hard as the judges' did? Scale of 1-10, how hard did this performance rock? Let us know below! 👇 #AGT #JohnWines #GuitarShred #AmericasGotTalent #RockMusic