Leoš Janáček’s String Quartet No. 1, “Kreutzer Sonata”, was written in a very short space of time, between 13 and 28 October 1923. The composition was inspired by Leo Tolstoy’s novella The Kreutzer Sonata. (The novella was in turn inspired by Beethoven’s Violin Sonata No. 9, known as the “Kreutzer Sonata” from the name of its dedicatee, Rodolphe Kreutzer.) Janáček also used the Tolstoy novel in 1908–1909, when it inspired him to compose a Piano Trio in three movements, now lost. Surviving fragments of the Trio suggest that it was quite similar to the surviving quartet, and reconstructions as a piano trio have been performed. “I was imagining a poor woman, tormented and run down, just like the one the Russian writer Tolstoy describes in his Kreutzer Sonata”, Janáček confided in one of his letters to his young friend Kamila Stösslová. In the music of the quartet is depicted psychological drama containing moments of conflict as well as emotional outbursts, passionate work rush towards catharsis and to final climax.