At a fraught contemporary moment, the BSO performed Shostakovich’s “Babi Yar” on Thursday night in Symphony Hall, concluding its traversal of the composer’s complete symphonies.
Friday evening in the Koussevitsky Shed at Tanglewood, BSO Assistant Conductor Anna Rakitina presented a massive, fascinating, thrilling and profound program juxtaposing Shostakovich at two very different moments of his career with Dvořák’s magnificent Violin Concerto and Borodin’s fierce Polovtsian