You've heard the song somewhere -- at the ball park, on YouTube, maybe even on public radio. It's the Korean pop hit "Gangnam Style" by PSY. The inescapable tune is helping "K-Pop" reach new heights of popularity in the U.S.
But it's just the tip of the cultural iceberg. A convention to celebrate K-Pop is taking place this weekend in Southern California, and it's expected to draw thousands of people.