Bits & Bytes: Sally Harris good works; dancing at Dewey Hall; blues at Club Helsinki; New Year’s blast of Bach

Post-intermission fare on New Year’s Eve consists of two Bach classics in special Berkshire Bach versions: Brandenburg Concerto No. 1 (what would New Year’s be without a Brandenburg?) with its spectacular solos for violin, horns, oboes, bassoon, and percussion, and the brilliant Orchestral Suite No. 3 in D with its three-trumpet-and timpani power and its famous Air for strings.