Tianxu An, the Curtis Institute of Music student, just 20, was ready to play the Tchaikovsky Piano Concerto No. 1 at the International Tchaikovsky Competition in Moscow in June. When conductor Vasily Petrenko brought in the orchestra for its brief introduction, the sound that came at An was that of Rachmaninoff’s Rhapsody on a Theme of Paganini. – Philadelphia Inquirer