EVERYONE who loves American guitar appreciates Johnny Cash.
I'm 40 years removed from his generation (at least) and a few decades from yours (I'm a gen-xer)
Johnny Cash was the real deal, his method and style doesn't go away.
Good music is good music.
Every generation can appreciate good music. That's why I love music, and also good art.
It's also the reason that Peter Paul Reubens, Jacques Louis David and Rembrandt are meaningful and Jackson Pollock is a poseur and cad.
There is an objective reality to that which is beautiful. (I actually believe that that is a Theologically significant point.) Those who appreciate real artistry, be it musical, architectural, in paintings, or in sculpture appreciate good art (or music) and it is timeless.....The generation which crafted it is irrelevant. Beauty, in all it's forms, is an attribute of, and gift of God, and only by drawing closer to Him can we appreciate genuine beauty.
The arts, in all forms, either celebrate his beauty, or the beauty of the creation he made. There's a Theological significance to the arts in all their forms, music included.