The Princeton Symphony Orchestra launches its 2019-20 season of chamber music on Sunday, October 20 at 4:30 p.m., in Wolfensohn Hall at the Institute for Advanced Study. Orchestra members in the ensemble are, top row from left, oboist Lillian Copeland and violinist Ruotao Mao; and bottom row, from left, violist Stephanie Griffin and cellist Alistair MacRae. Music by Mozart, Beethoven, and Britten is on the program. Visit princetonsymphony.org.