The 2013 Van Cliburn International Piano Competition is heading down the homestretch. We began two weeks ago with 30 pianists. Now we are down to six finalists. The judges will pick a winner Sunday night. For the first time since 1997, there is an American among the finalists: Sean Chen. On Thursday's Performance Today, we'll hear a highlight from the first round of the competition performed by the 24 year-old pianist from Los Angeles.