Kyung-A Yoo’s BeautyFull series opens its fourth season with chamber music from Eastern Europe. The program includes Bartók’s magnificent work "Sonata for Two Pianos and Percussion," Janacek's Violin Sonata, and Lutosławski’s "Variations on a Theme" by Paganini. Featured performers include Dr. Yoo on piano, Charlie Tauber on piano, Marcus Reddick on percussion, and Joshua Smith…