2nd date, dinner and movie or...dinner and concert? and why?

we're 23. the movie is the original idea but I mean, I don't think either of us are dying to see anything. Its a safe idea though. We work together by the way. I'm not exactly sure where she sees us going but I suppose that's what us dating is for. I recently found out that country singer Julianne Hough is coming to a local festival tomorrow. This girl loves country music and I'm willing to bet she likes Julianne Hough (is she popular among country fans?). Should we go to the concert instead? I personally don't listen to much country but I don't necessarily hate it. Does that make us going a bad idea? I really like this girl a lot and feel like she'd really enjoy the concert and going. At the same time she could feel bad that I don't know the music....I don't know. advice?