The string trio Gruppo del Lupo (William Joo, violin; Andrew Lan, viola; and Anna Wittstruck, cello) is joined by special guest artist Chen Zhao, violinist with the San Francisco Symphony. Gruppo del Lupo is part of Stanford’s chamber music program. This program will feature Mozart’s Divertimento in E-flat for string trio and Schumann’s String Quartet No. 3 in A Major, Op. 41.