TOLSTOY had a fine understanding of music and an even better one of human relationships. That is why his novella The Kreutzer Sonata, which equates music's power with lust and disapproves of both, is disconcerting, for its fundamentalist condemnation of the erotic.
Tolstoy opined that human sex was ''swinish'', which may be unfair to pigs, and which his wife thought inconsistent with his actions.
The story is told through the words of a traveller who meets a wife murderer on a train. The wife's story is never told, a situation Laura Wade has addressed in two elegantly paired playlets, performed between the movements of Beethoven's original Violin Sonata, opus 47, the Kreutzer, in the first half, and Janacek's First String Quartet, The Kreutzer Sonata, in the second.