At Carnegie Hall, the BSO and Andris Nelsons performed an all-Shostakovich program with Yo-Yo Ma in the Cello Concerto No. 1 and the Symphony No. 11. Before playing, Ma said, “We play Shostakovich so that no death is ever just a statistic.” The concerto’s D-S-C-H motif, ironic colors, and Russian soul resonated deeply, honoring the composer’s legacy.