The Borodins begin with the fifth of Beethoven’sground-breaking Op. 18 quartets, inspired byMozart yet strikingly original in style and content,before turning to the exquisitely subtle StringQuartet in F Op. 135, the composer’s final work inthe genre. Shostakovich’s String Quartet No. 14,another late work, resonates with the subtlehumour of Beethoven’s Op. 135.