Let me tell you about my theories on art and fishing.
This Ernest Hemingway story is definitely about fishing.
On the other hand, I have a theory that most Billy Joel songs are either a) definitely about a fisherman or b) could exist in one world where the protagonist is a fishing professional. Kinda the same thing with Bruce Springsteen song; the whole canon is one working-class world.
Except for songs about cars. Those are a whole other thing.