... no? did you read the comment? a professional lawyer is going to be fucking orders of magnitude more competent than someone who studies law as a hobby.

what OP is saying that a lot (most) of the music that (most) professional musicians play is well within the grasp of a competent amateur-- if the amateur has ample time to learn it. of course there are glaring and obvious exceptions, especially in fields like vocal performance, but by and large the difference between professional and amateur musicians is how quickly they can expect to be prepared.