Par CHOSTAKOVITCH DIMITRI. Shostakovich’s fifteenth symphony differs substantially in many ways from his other late symphonies. The eleventh (1957), subtitled The Year 1905, and the twelfth (1960), subtitled The Year 1917, are both programmatic symphonies, relating to political and historical events within the year of which they are subtitled. The next two symphonies are sung texts, with vocal and…