The California Bach Society, recently awarded “Best Baroque Performance” by San Francisco Classical Voice for its 2016 production of Bach’s St. Matthew Passion, presents two other jewels from J.S. Bach’s work: Cantata 21 Ich hatte viel Bekümmernis and the Missa Brevis in G, BWV 236. Artistic Director Paul Flight leads the 30-voice chorus, fine vocal soloists, and a Baroque orchestra of trumpets, timpani, oboes, and strings.