Education is accessible to everyone for free. Not to be confused with schooling, which is presumably what you are trying to point to here. The government already provides all of the schooling one needs to be a useful member of society for free.

If someone wants to attend guitar school to learn how to play guitar on top of that, I am not sure why it cannot be controlled by the ability to pay. Learning how to play the guitar is a useful skill and all, but the time of guitar teachers is a limited resource. There has to be some way to manage that.