Contrary to what you may have heard from Henry Rollins or/and Ian MacKaye and/or anyone else who joined a band after working in an ice cream shop, you can't really learn much about a person based on what kind of music they happen to like. As a personality test, it doesn't work even half the time. However, there is at least one thing you can learn: The most wretched people in the word are those who tell you they like every kind of music 'except country.' People who say that are boorish and pretentious at the same time.