There are different levels of being a guitarist. One may just be starting to learn when he has just found an opportunity during his married life. Another is the casual player who could have started learning when he was a child. When he has made it a hobby to the point of making it a living by playing in a band or performs solo in a pizza house or night bar, that is yet another level. Being able to teach another without notes is the highest form of authority he can have. As the wife, you can make him happier with a brand new epiphone wildkat for his birthday or your anniversary.