A wonderful evening of chamber music with members of the San Francisco Symphony playing string trios by Haydn and Beethoven. Program includes Franz Josef Haydn String Trio Op. 53 and Ludwig von Beethoven String Trio in C minor Op.9, No. 3. Chen Zhao, Violin, Nancy Ellis, Viola, Barbara Bogatin, Cello. 7 pm, $45 admission, children free. Light refreshments and reception with the artists to follow. Proceeds to benefit the restoration of the Ralston White Retreat. For reservations and more information, contact Andrea Vecchione, Program Director, email andrea@ralstonwhiteretreat.org, tel 415.302.8045.