How Well Does Nicole Kidman Know Country Music?

When I worked at a country station back in Eau Claire, Wisconsin, we used to do a version of this contest (which Ellen calls "Country Song or Country Wrong") with listeners who stopped by our booth at Country Jam, USA. We called it, "Country Song... Or It Ain't" back then, and of course, most of our contestants had visited the Budweiser tent earlier, so the results might have been a little skewed. But just HOW much does Nicole Kidman know about her husband's line of work?