Four years ago, I wrote that the Nashville-country superstar Eric Church was our greatest working rock star. That was hyperbole, of course. (And it’s now outdated in an era when our greatest working rock star is Lil Uzi Vert.) But I’d just watched Church play a ridiculously entertaining high-energy arena show, and that was what my heart was feeling that day. And anyway, the point stands: Church is someone who’s at the top of his genre because he breaks its rules in big, exciting, arena-filling ways. If that’s not a rock star, I don’t know what is.