Usually referred to as a sonata, 1. X. 1905 is Janáček's most significant piece for the piano.
The work had a tumultuous history. It originally consisted of three movements inspired by the death of a Czech laborer shot by soldiers during a demonstration in Brno. Shortly after its première in 1906 Janáček destroyed the final movement and then, following a private performance in Prague, the other two movements as well. It was not until the celebrations for his 70th birthday that the pianist of the premiere found the courage to play the piece to the composer once again from her personal copy. Janáček then decided to publish the work after all.