I ’m fishing with Noah Kahan , and things are looking pretty bleak. We’re at a farm an hour west of Nashville, standing in front of a pond, casting our respective rods and waiting patiently. It’s a perfect day for fishing — an afternoon in early April, not too windy, the sky so clear and blue its reflection bounces off the water. But so far, nothing’s biting. Still, Kahan remains hopeful, as a camera crew looks on. “If we catch tilapia,” the 29-year-old songwriter says, “we’ll go viral as fuck.”  As the minutes tick by, that seems less and less likely. Kahan works the line firmly, wearing faded blue Levi’s, a button-down flannel, and suede boots. “I feel like my team’s been dressing me more and more in cowboy-looking stuff, and they’re eventually going to have to accept that I’m not even close to a cowboy,” he says. His shoulder-length brown hair matches his rugged beard. If you were thinking about poking fun of Kahan’s look on social media, rest assured he’s beat you to it.…