“Something Old, Something New,” the final concert in the 2017-18 season, features the debut performance of Composer-in-Residence Katherine Balch’s first commission for the California Symphony, like a broken clock. Music Director Donato Cabrera also conducts Sibelius’ Symphony No. 3, and internationally acclaimed, award-winning pianist Haochen Zhang performs Brahms’ virtuosic Piano Concerto No. 2.