My instructor is 15 years younger than me and was playing regular gigs up until the beginning of the pandemic. I go to a small one-man music shop actually to man he's the other man and he learned from the owner 30 years ago... I think he is into studying classical right now and laughs at how close it is to heavy metal and stuff like that and how the two don't like each other but laughs at how similar they are... He says he has many of friends who can play the guitar very well but have no idea what they're playing.. as in their music theory and things like that..
